PRELIMS · ENVIRONMENT

Environment: 276 questions to attempt.

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Prelims 2016

Which of the following best describes the aim of ‘Green India Mission’ of the Government of India? 1. Incorporating environment benefits and costs into the Uni…

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Prelims 2020

Which one of the following protected areas is well-known for the conservation of a sub-species of the Indian swamp deer (Barasingha) that thrives well on hard…

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Prelims 2024

Consider the following: 1. Battery storage 2. Biomass generators 3. Fuel cells 4. Rooftop solar photovoltaic units How many of the above are considered "Distri…

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Prelims 2011

Regarding “carbon credits”, which one of the following statements is not correct?

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Prelims 2011

The “Red Data Book” published by the International Union for Conservation of Nature and Natural Resources (IUCN) contain lists of - 1. Endemic plant and animal…

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Prelims 2011

The Himalayan Range is very rich in species diversity. Which one among the following is the most appropriate reason for this phenomenon?

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Prelims 2011

The formation of the ozone hole in the Antarctic region has been a cause of concern. What could be the reason for the formation of this hole?

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Prelims 2011

Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower a…

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Prelims 2011

There is a concern over the increase in harmful algal blooms in the seawaters of India. What could be the causative factors for this phenomenon? 1. Discharge o…

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Prelims 2011

Recently, "oil zapper" was in the news. What is it?

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Prelims 2011

Consider the following statements: 1. Biodiversity is normally greater in the lower latitudes as compared to the higher latitudes. 2. Along the mountain gradie…

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Prelims 2011

Three of the following criteria have contributed to the recognition of Western Ghats-Sri Lanka and Indo-Burma regions as hotspots of biodiversity: 1. Species r…

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Prelims 2011

In the Union Budget 2011-12, a full exemption from basic customs duty was extended to the bio-based asphalt (bioasphalt). What is the importance of this materi…

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Prelims 2011

Biodiversity forms the basis for human existence in the following ways : 1. Soil formation 2. Prevention of soil erosion 3. Recycling of waste 4. Pollination o…

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Prelims 2011

Consider the following: 1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above is/are the emission/ emissions from coal combustion at…

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Prelims 2011

In the context of ecosystem productivity, marine upwelling zones are important as they increase the marine productivity by bringing the: 1. decomposer microorg…

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Prelims 2011

The 2004 Tsunami made people realize that mangroves can serve as a reliable safety hedge against coastal calamities. How do mangroves function as a safety hedg…

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Prelims 2011

Consider the following : 1. Photosynthesis. 2. Respiration. 3. The decay of organic matter. 4. Volcanic action. Which of the above add carbon dioxide to the ca…

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Prelims 2011

A sandy and saline area is the natural habitat of an Indian animal species. The animal has no predators in that area but its existence is threatened due to the…

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Prelims 2011

If a tropical rainforest is removed, it does not regenerate quickly as compared to a tropical deciduous forest. This is because -

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Prelims 2011

Which one of the following is not a site for the in-situ method of conservation of flora?

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Prelims 2011

With reference to India, consider the following Central Acts: 1. Import and Export (Control) Act, 1947 2. Mining and Mineral Development (Regulation) Act, 1957…

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Prelims 2012

How does the National Biodiversity Authority (NBA) help in protecting Indian agriculture? 1. NBA checks the biopiracy and protects indigenous and traditional g…

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Prelims 2012

Which of the following can be threats to the biodiversity of a geographical area? 1. Global warming 2. Fragmentation of habitat 3. Invasion of alien species 4.…

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Prelims 2012

Consider the following agricultural practices: 1. Contour bunding 2. Relay cropping 3. Zero Tillage In the context of global climate change, which of the above…

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Prelims 2012

The increasing amount of carbon dioxide in the air is slowly raising the temperature of the atmosphere because it absorbs -

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Prelims 2012

What would happen if phytoplankton of an ocean is completely destroyed for some reason? 1. The ocean as a carbon sink would be adversely affected. 2. The food…

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Prelims 2012

Consider the following kinds of organisms : 1. Bacteria 2. Fungi 3. Flowering plants Some species of which of the above kinds of organisms are employed as biop…

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Prelims 2012

Which one of the following groups of animals belongs to the category of endangered species?

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Prelims 2012

Vultures which used to be very common in the Indian countryside some years ago are rarely seen nowadays. This is attributed to

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Prelims 2012

Consider the following areas: 1. Bandipur 2. Bhitarkanika 3. Manas 4. Sunderbans Which of the above are Tiger Reserves?

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Prelims 2012

Lead, ingested or inhaled is a health hazard. After the addition of lead to petrol has been banned, what still are the sources of lead poisoning? 1. Smelting u…

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Prelims 2012

With reference to the wetlands of India, consider the following statements : 1. The country’s total geographical area under the category of wetlands is recorde…

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Prelims 2012

The Millennium Ecosystem Assessment describes the following major categories of ecosystem services-provisioning, supporting, regulating, preserving and cultura…

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Prelims 2012

Consider the following: 1. Black-necked crane 2. Cheetah 3. Flying squirrel 4. Snow leopard Which of the above are naturally found in India?

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Prelims 2012

In which one among the following categories of protected areas in India are local people not allowed to collect and use the biomass?

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Prelims 2012

What is the difference between the antelopes Oryx and Chiru?

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Prelims 2012

Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/a…

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Prelims 2012

Consider the following statements: Chlorofluorocarbons, known as ozone-depleting substances, are used 1. in the production of plastic foams 2. in the productio…

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Prelims 2012

Consider the following kinds of organisms : 1. Bat 2. Bee 3. Bird Which of the above is/are pollinating agent/agents?

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Prelims 2012

The National Green Tribunal Act, 2010 was enacted in consonance with which of the following provisions of the Constitution of India? 1. Right to a healthy envi…

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Prelims 2013

Which of the following adds/add nitrogen to the soil? 1. Excretion of urea by animals 2. Burning of coal by man 3. Death of vegetation Select the correct answe…

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Prelims 2013

Photochemical smog is a resultant of the reaction among -

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Prelims 2013

Acid rain is caused by the pollution of the environment by -

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Prelims 2013

Consider the following pairs about parks and rivers passing through them: | List I | List II | | --- | --- | | 1. Corbett National Park | Ganga | | 2. Kazirang…

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Prelims 2013

With reference to food chains in ecosystems, consider the following statements : 1. A food chain illustrates the order in which a chain of organisms feeds upon…

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Prelims 2013

With reference to the food chains in ecosystems, which of the following kinds of an organism is/are known as decomposer organism/organisms? 1. Virus 2. Fungi 3…

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Prelims 2013

Consider the following pairs: | Protected areas | Region | | -- | -- | | 1. Nokrek Biosphere Reserve | Garo Hills | | 2. Logtak (Loktak) Lake | Barail Range |…

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Prelims 2013

Consider the following animals: 1. Sea cow 2. Sea horse 3. Sea lion Which of the above is/are mammal/mammals?

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Prelims 2013

Consider the following fauna of India: 1. Gharial 2. Leatherback turtle 3. Swamp deer Which of the above is/are endangered?

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Prelims 2013

Consider the following 1. Star tortoise 2. Monitor lizard 3. Pygmy Hog 4. Spider monkey Which of the above found in India?

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Prelims 2013

In which of the following States is lion-tailed macaque found in its natural habitat? 1. Tamil Nadu 2. Kerala 3. Karnataka 4. Andhra Pradesh Select the correct…

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Prelims 2013

Which of the following is/are unique characteristic/characteristics of equatorial forests? 1. Presence of tall, closely set trees with crowns forming a continu…

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Prelims 2013

Which one of the following terms describes not only the physical space occupied by an organism but also its functional role in the community of organisms?

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Prelims 2013

In the grasslands, trees do not replace the grasses as a part of an ecological succession because of

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Prelims 2013

Which one of the following is the correct sequence of ecosystems in the order of decreasing productivity?

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Prelims 2014

With reference to ‘Global Environment Facility’, which of the following statements is/are correct

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Prelims 2014

Consider the following statements: 1. Animal Welfare Board of India is established under the Environment (Protection) Act, 1986. 2. National Tiger Conservation…

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Prelims 2014

If you walk through the countryside, you are likely to see some birds stalking alongside the cattle to seize the insects, disturbed by their movement through g…

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Prelims 2014

Brominated flame retardants are used in many household products like mattresses and upholstery. Why is there some concern about their use? 1. They are highly r…

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Prelims 2014

Which one of the following is the correct sequence of a food chain?

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Prelims 2014

Other than poaching, what are the possible reasons for the decline in the population of Ganges River Dolphins? 1. Construction of dams and barrages on rivers 2…

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Prelims 2014

With reference to ‘Eco-Sensitive Zones’, which of the following statements is/are correct? 1. Eco-Sensitive Zones are the areas that are declared under the Wil…

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Prelims 2014

With reference to a conservation organization called Wetlands International, which of the following statements is/are correct? 1. It is an intergovernmental or…

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Prelims 2014

Lichens, which are capable of initiating ecological succession even on a bare rock, are actually a symbiotic association of

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Prelims 2014

The most important strategy for the conservation of biodiversity together with traditional human life is the establishment of

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Prelims 2014

If a wetland of international importance is brought under the ‘Montreux Record’, what does it imply?

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Prelims 2014

With reference to Bombay Natural History Society (BNHS), consider the following statements : 1. It is an autonomous organization under the Ministry of Environm…

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Prelims 2014

With reference to the Neem tree, consider the following statements: 1. Neem oil can be used as a pesticide to control the proliferation of some species of inse…

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Prelims 2014

Which of the following adds/add carbon dioxide to the carbon cycle on the planet Earth? 1. Volcanic action 2. Respiration 3. Photosynthesis 4. The decay of org…

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Prelims 2014

Which of the following are some important pollutants released by the steel industry in India? 1. Oxides of sulphur 2. Oxides of nitrogen 3. Carbon monoxide 4.…

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Prelims 2014

Consider the following pairs | List I | List II | | --- | --- | | 1. Dampa Tiger Reserve | Mizoram | | 2. Gumti Wildlife Sanctuary | Sikkim | | 3. Saramati Pea…

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Prelims 2014

Consider the following: 1. Bats 2. Bears 3. Rodents The phenomenon of hibernation can be observed in which of the above kinds of animals?

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Prelims 2014

Consider the following statements regarding ‘Earth Hour’ 1. It is an initiative of UNEP and UNESCO. 2. It is a movement in which the participants switch off th…

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Prelims 2014

Consider the following pairs | Wetlands | Confluence of rivers | | -- | -- | | 1. Harike Wetlands | Beas and Satluj/Sutlej | | 2. Keoladeo Ghana National Park…

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Prelims 2014

Which of the following have coral reefs? 1. Andaman and Nicobar Islands 2. Gulf of Kutch 3. Gulf of Mannar 4. Sunderbans Select the correct answer using the co…

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Prelims 2014

Among the following organisms, which one does not belong to the class of the other three?

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Prelims 2014

The scientific view is that the increase in global temperature should not exceed 2 °C above the pre-industrial level. If the global temperature increases beyon…

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Prelims 2014

With reference to two non-conventional energy sources called ‘coal bed methane’ and ‘shale gas’, consider the following statements: 1. Coal bed methane is the…

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Prelims 2015

Which of the following National Parks is unique in being a swamp with floating vegetation that supports rich biodiversity?

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Prelims 2015

‘BioCarbon Fund Initiative for Sustainable Forest Landscapes’ is managed by the -

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Prelims 2015

Which one of the following is the national aquatic animal of India?

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Prelims 2015

With reference to ‘fly ash’ produced by the power plants using coal as fuel, which of the following statements is/are correct? 1. Fly ash can be used in the pr…

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Prelims 2015

Which one of the following is the best description of the term “ecosystem”?

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Prelims 2015

Which of the following statements regarding ‘Green Climate Fund’ is/are correct? 1. It is intended to assist the developing countries in adaptation and mitigat…

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Prelims 2015

With reference to bio-toilets used by the Indian Railways, consider the following statements: 1. The decomposition of human waste in the bio-toilets is initiat…

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Prelims 2015

The Genetic Engineering Appraisal Committee is constituted under the

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Prelims 2015

With reference to ‘Forest Carbon Partnership Facility’, which of the following statements is/are correct? 1. It is a global partnership of governments, busines…

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Prelims 2015

What can be the impact of excessive/inappropriate use of nitrogenous fertilizers in agriculture? 1. The proliferation of nitrogen-fixing microorganisms in the…

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Prelims 2015

With reference to ‘dugong’, mammal found in India, which of the following statements is/are correct? 1. It is a herbivorous marine animal. 2. It is found along…

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Prelims 2015

With reference to an organization known as ‘Birdlife International’ which of the following statements is/are correct? 1. It is a Global Partnership of Conserva…

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Prelims 2015

With reference to the International Union for Conservation of Nature and Natural Resources (IUCN) and the Convention on International Trade in Endangered Speci…

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Prelims 2015

Which one of the following National Parks has a climate that varies from tropical to subtropical, temperate and Arctic?

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Prelims 2015

In India, in which one of the following types of forests is teak a dominant tree species?

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Prelims 2015

What is Rio+20 Conference, often mentioned in the news?

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Prelims 2015

Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?

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Prelims 2016

With reference to an initiative called ‘The Economics of Ecosystems and Biodiversity (TEEB)’, which of the following statements is/are correct? 1. It is an ini…

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Prelims 2016

What is/are unique about ‘Kharai camel’ a breed found in India? 1. It is capable of swimming up to three kilometres in seawater. 2. It survives by grazing on m…

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Prelims 2016

The term ‘Intended Nationally Determined Contribution’ is sometimes seen in the news in the context of:

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Prelims 2016

With reference to the Agreement at the UNFCCC Meeting in Paris in 2015, which of the following statements is/are correct? 1. The Agreement was signed by all th…

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Prelims 2016

‘Net metering’ is sometimes seen in the news in the context of promoting the -

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Prelims 2016

In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index? 1. Carbon diox…

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Prelims 2016

With reference to ‘Agenda 21’, sometimes seen in the news, consider the following statements: 1. It is a global action plan for sustainable development. 2. It…

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Prelims 2016

Consider the following statements: 1. The Sustainable Development Goals were first proposed in 1972 by a global think tank called the ‘Club of Rome’. 2. The Su…

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Prelims 2016

Which of the following are the key features of ‘National Ganga River Basin Authority (NGRBA)’? 1. The river basin is the unit of planning and management. 2. It…

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Prelims 2016

What is/are the importance/importances of the ‘United Nations Convention to Combat Desertification? 1. It aims to promote effective action through innovative n…

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Prelims 2016

Consider the following pairs: | Terms sometimes seen in the news | Their origin | | -- | -- | | 1. Annex-I Countries | Cartagena Protocol | | 2. Certified Emis…

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Prelims 2016

On which of the following can you find the Bureau of Energy Efficiency Star Label? 1. Ceiling fans 2. Electric geysers 3. Tubular fluorescent lamps Select the…

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Prelims 2016

Proper design and effective implementation of UN-REDD+ Programme can significantly contribute to - 1. Protection of biodiversity 2. Resilience of forest ecosys…

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Prelims 2016

With reference to ‘Red Sanders’, sometimes seen in the news, consider the following statements: 1. It is a tree species found in a part of South India. 2. It i…

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Prelims 2017

Biological Oxygen Demand (BOD) is a standard criterion for -

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Prelims 2017

In the context of mitigating the impending global warming due to anthropogenic emissions of carbon dioxide, which of the following can be the potential sites f…

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Prelims 2017

According to the Wildlife (Protection) Act, 1972, which of the following animals cannot be hunted by any person except under some provisions provided by law? 1…

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Prelims 2017

Recently there was a proposal to translocate some of the lions from their natural habitat in Gujarat to which one of the following sites?

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Prelims 2017

Due to some reasons if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences? 1. Pollination of s…

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Prelims 2017

With reference to ‘Global Climate Change Alliance’, which of the following statements is/are correct? 1. It is an initiative of the European Union. 2. It provi…

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Prelims 2017

Consider the following statements in respect of Trade-Related Analysis of Fauna and Flora in Commerce (TRAFFIC): 1. TRAFFIC is a bureau under the United Nation…

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Prelims 2017

Consider the following pairs: Commonly used/consumed materials and Unwanted or controversial chemicals likely to be found in them | List I | List II | | --- |…

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Prelims 2017

The term 'M-STRIPES’ is sometimes seen in the news in the context of

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Prelims 2017

In India, if a species of tortoise is declared protected under Schedule I of the Wildlife (Protection) Act, 1972, what does it imply?

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Prelims 2017

Consider the following statements: 1. Climate and Clean Air Coalition (CCAC) to Reduce Short-Lived Climate Pollutants is a unique initiative of G20 group of co…

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Prelims 2017

If you want to see gharials in their natural habitat, which one of the following is the best place to visit?

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Prelims 2018

Why is a plant called Prosopis juliflora often mentioned in the news?

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Prelims 2018

The term "sixth mass extinction/sixth extinction" is often mentioned in the news in the context of the discussion of

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Prelims 2018

"Momentum for Change: Climate Neutral Now" is an initiative launched by

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Prelims 2018

Which of the following statements best describes "carbon fertilization"?

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Prelims 2018

How is the National Green Tribunal (NGT) different from the Central Pollution Control Board (CPCB)? 1. The NGT has been established by an Act whereas the CPCB…

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Prelims 2018

Consider the following statements: 1. The definition of "Critical Wildlife Habitat" is incorporated in the Forest Rights Act, 2006. 2. For the first time in In…

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Prelims 2018

Which of the following is/are the possible consequence/s of heavy sand mining in riverbeds? 1. Decreased salinity in the river 2. Pollution of groundwater 3. L…

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Prelims 2018

With reference to the 'Global Alliance for Climate-Smart Agriculture (GACSA)', which of the following statements is/are correct. 1. GACSA is an outcome of the…

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Prelims 2018

In which one of the following States is Pakhui Wildlife Sanctuary located?

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Prelims 2018

Consider the following statements - 1. Most of the world's coral reefs are in tropical waters. 2. More than one-third of the world's coral reefs are located in…

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Prelims 2019

Consider the following statements: 1. Some species of turtles are herbivores. 2. Some species of fish are herbivores. 3. Some species of marine mammals are her…

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Prelims 2019

Consider the following statements: 1. Agricultural soils release nitrogen oxides into the environment. 2. Cattle release ammonia into the environment. 3. Poult…

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Prelims 2019

In India, ‘extended producer responsibility’ was introduced as an important feature in which of the following?

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Prelims 2019

In the context of which one of the following are the terms ‘pyrolysis and plasma gasification’ mentioned?

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Prelims 2019

Recently, there was a growing awareness in our country about the importance of Himalayan nettle (Girardinia diversifolia) because it is found to be a sustainab…

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Prelims 2019

Consider the following statements: 1. As per law, the Compensatory Afforestation Fund Management and Planning Authority exists at both National and State level…

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Prelims 2019

Which of the following statements are correct about the deposits of ‘methane hydrate’? 1. Global warming might trigger the release of methane gas from these de…

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Prelims 2019

Consider the following statements : 1. Under the Ramsar Convention, it is mandatory on the part of the Government of India to protect and conserve all the wetl…

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Prelims 2019

As per the Solid Waste Management Rules, 2016 in India, which one of the following statements is correct?

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Prelims 2019

Which of the following are in Agasthyamala Biosphere Reserve?

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Prelims 2019

Consider the following statements 1. Asiatic lion is naturally found in India only. 2. Double-humped camel is naturally found in India only. 3. One-horned rhin…

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Prelims 2019

Consider the following statements : The Environment Protection Act, 1986 empowers the Government of India to 1. state the requirement of public participation i…

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Prelims 2019

Which one of the following National Parks lies completely in the temperate alpine zone?

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Prelims 2019

Consider the following pairs: Wildlife Naturally : found in | List I | List II | | --- | --- | | 1. Blue-finned Mahseer | Cauvery River | | 2. Irrawaddy Dolphi…

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Prelims 2019

Why is there a great concern about the ‘microbeads’ that are released into the environment?

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Prelims 2019

Consider the following: 1. Carbon monoxide 2. Methane 3. Ozone 4. Sulphur dioxide Which of the above are released into the atmosphere due to the burning of cro…

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Prelims 2019

Consider the following statements: 1. As per recent amendment to the Indian Forest Act, 1927, forest dwellers have the right to fell the bamboos grown on fores…

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Prelims 2020

Which one of the following statements best describes the term ‘Social Cost of Carbon’?

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Prelims 2020

With reference to India’s Desert National Park, which of the following statements are correct? 1. It is spread over two districts. 2. There is no human habitat…

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Prelims 2020

According to India’s National Policy on Biofuels, which of the following can be used as raw materials for the production of biofuels? 1. Cassava 2. Damaged whe…

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Prelims 2020

If a particular plant species is placed under Schedule VI of The Wildlife Protection Act, 1972, what is the implication?

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Prelims 2020

With reference to India’s biodiversity, Ceylon frogmouth, Coppersmith barbet, Gray-chinned minivet and White-throated redstart are

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Prelims 2020

Consider the following statements: 1. Coal ash contains arsenic, lead and mercury. 2. Coal-fired power plants release Sulphur dioxide and oxides of nitrogen in…

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Prelims 2020

Which of the following are the reasons/factors for exposure to benzene pollution? 1. Automobile exhaust 2. Tobacco smoke 3. Wood burning 4. Using varnished woo…

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Prelims 2020

In rural road construction, the use of which of the following is preferred for ensuring environmental sustainability or to reduce carbon footprint? 1. Copper s…

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Prelims 2020

With reference to solar water pumps, consider the following statements: 1. Solar power can be used for running surface pumps and not for submersible pumps. 2.…

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Prelims 2020

With reference to Indian elephants, consider the following statements: 1. The leader of an elephant group is a female. 2. The maximum gestation period can be 2…

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Prelims 2020

Which of the following Protected Areas are located in Cauvery basin? 1. Nagarhole National Park 2. Papikonda National Part 3. Sathyamangalam Tiger Reserve 4. W…

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Prelims 2020

Which of the following are the most likely places to find the musk deer in its natural habitat? 1. Askot Wildlife Sanctuary 2. Gangotri National Park 3. Kishan…

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Prelims 2021

In the context of India’s preparation for Climate-smart Agriculture, consider the following statements: 1. The ‘Climate-Smart Village’ approach in India is a p…

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Prelims 2021

Why is there a concern about copper smelting plants? 1. They may release lethal quantities of carbon monoxide into environment. 2. The copper slag can cause th…

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Prelims 2021

Consider the following kinds of organisms: 1. Copepods 2. Cyanobacteria 3. Diatoms 4. Foraminifera Which of the above are primary producers in the food chains…

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Prelims 2021

At the national level, which ministry is the nodal agency to ensure effective implementation of the Scheduled Tribes and other Traditional Forest Dwellers (Rec…

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Prelims 2021

Which one of the following is used in preparing a natural mosquito repellent?

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Prelims 2021

“Leaf litter decomposes faster than in any other biome and as a result the soil surface is often almost bare. Apart from trees, the vegetation is largely compo…

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Prelims 2021

What is blue carbon?

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Prelims 2021

Magnetite particles, suspected to cause neurodegenerative problems, are generated as environmental pollutants from which of the following? 1. Brakes of motor v…

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Prelims 2021

With reference to furnace oil, consider the following statements: 1. It is a product of oil refineries. 2. Some industries use it to generate power. 3. Its use…

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Prelims 2021

Which of the following have species that can establish symbiotic relationship with other organisms? 1. Cnidarians 2. Fungi 3. Protozoa Select the correct answe…

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Prelims 2021

Consider the following animals: 1. Hedgehog 2. Marmot 3. Pangolin To reduce the chance of being captured by predators, which of the above organisms rolls up/ro…

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Prelims 2021

Bisphenol A (BPA) , a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?

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Prelims 2021

The ‘Common Carbon Metric’, supported by UNEP, has been developed for

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Prelims 2021

‘R2 Code of Practices constitutes a tool available for promoting the adoption of

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Prelims 2021

With reference to the ‘New York Declaration on Forests’. Which of the following statements are correct? 1. It was first endorsed at the United Nations Climate…

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Prelims 2021

Which one of the following is a filter feeder?

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Prelims 2021

Triclosan considered harmful when exposed to high levels for a long time, is most likely present in which of the following?

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Prelims 2021

Consider the following statements: 1. Moringa (drumstick tree) is a leguminous evergreen tree. 2. Tamarind tree is endemic to South Asia. 3. In India, most of…

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Prelims 2022

With reference to "Gucchi" sometimes mentioned in the news, consider the following statements: 1. It is a fungus. 2. It grows in some Himalayan forest areas. 3…

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Prelims 2022

Which of the following are nitrogen-fixing plants? 1. Alfalfa 2. Amaranth 3. Chickpea 4. Clover 5. Purslane (Kulfa) 6. Spinach Select the correct answer using…

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Prelims 2022

Which one of the following has been constituted under the Environment (Protection) Act, 1986?

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Prelims 2022

In the context of WHO Air Quality Guidelines, consider the following statements: 1. The 24-hour mean of PM2.5 should not exceed 15 ug/m3 and annual mean of PM2…

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Prelims 2022

Consider the following; 1. Carbon monoxide 2. Nitrogen oxide 3. Ozone 4. Sulphur dioxide Excess of which of the above in the environment is/are the cause(s) of…

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Prelims 2022

With reference to Indian laws about wildlife protection, consider the following statements: 1. Wild animals are the sole property of the government. 2. When a…

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Prelims 2022

“Climate Action Tracker" which emission reduction pledges of different countries is a:

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Prelims 2022

Which of the following is not a bird?

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Prelims 2022

Consider the following pairs: Wetland/Lake - Location | List I | List II | | --- | --- | | 1. Hokera Wetland | Punjab | | 2. Renuka Wetland | Himachal Pradesh…

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Prelims 2022

Consider the following statements: 1. "The Climate Group" is an international non-profit organization that drives climate action by building large networks and…

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Prelims 2022

With reference to polyethylene terephthalate, the use of which is so widespread in our daily lives, consider the following statements: 1. Its fibres can be ble…

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Prelims 2022

"Biorock technology" is talked about in which one of the following situations?

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Prelims 2022

"If rainforests and tropical forests are the lungs of the Earth, then surely wetlands function as its kidneys." Which one of the following functions of wetland…

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Prelims 2022

Certain species of which one of the following organisms are well known as cultivators of fungi?

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Prelims 2023

Consider the following trees: 1. Jackfruit (Artocarpus heterophyllus) 2. Mahua (Madhuca indica) 3. Teak (Tectona grandis) How many of the above are deciduous t…

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Prelims 2023

Consider the following statements: Statement-I: Marsupials are not naturally found in India. Statement-II: Marsupials can thrive only in montane grasslands wit…

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Prelims 2023

Which of the following organisms perform waggle dance for others of their kin to indicate the direction and the distance to a source of their food?

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Prelims 2023

Consider the following heavy industries : 1. Fertilizer plants 2. Oil refineries 3. Steel plants Green hydrogen is expected to play a significant role in decar…

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Prelims 2023

Consider the following statements regarding the Indian squirrels: 1. They build nests by making burrows in the ground. 2. They store their food materials like…

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Prelims 2023

Consider the following statements: 1. Some microorganisms can grow in environments with temperature above the boiling point of water. 2. Some microorganisms ca…

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Prelims 2023

Consider the following fauna: 1. Lion-tailed Macaque 2. Malabar Civet 3. Sambar Deer How many of the above are generally nocturnal or most active after sunset?

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Prelims 2023

Consider the following: 1. Aerosols 2. Foam agents 3. Fire retardants 4. Lubricants In the making of how many of the above are hydrofluorocarbons used?

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Prelims 2023

Invasive species Specialist Group' (that develops Global Invasive Species Database) belongs to which one of the following organizations?

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Prelims 2023

Which one of the following makes a tool with a stick to scrap insects from a hole in a tree or a log of wood?

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Prelims 2023

Consider the following statements : 1, In India, the Biodiversity Management committees are key to the realization of the objectives of Nagoya Protocol. 2. The…

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Prelims 2023

Consider the following statements: 1. Some mushrooms have medicinal properties. 2. Some mushrooms have psychoactive properties. 3. Some mushrooms have insectic…

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Prelims 2023

Consider the following activities : 1. Spreading finely ground basalt rock on farmlands extensively 2. Increasing the alkalinity of oceans by adding lime 3. Ca…

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Prelims 2023

Consider the following statements: Statement-I: Carbon markets are likely to be one of the most widespread tools in the fight against climate change. Statement…

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Prelims 2023

Consider the following statements: Once the Central Government notifies an area as a 'Community Reserve' 1. The Chief Wildlife Warden of the State becomes the…

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Prelims 2023

Consider the following statements regarding mercury pollution : 1. Gold mining activity is a source of mercury pollution in the world. 2. Coal-based thermal po…

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Prelims 2023

With reference to the role of biofilters in Recirculating Aquaculture System, consider the following statements: 1. Biofilters provide waste treatment by remov…

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Prelims 2024

According to the Environmental Protection Agency (EPA), which one of the following is the largest source of sulphur dioxide emissions ?

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Prelims 2024

Consider the following statements : Statement-I : The European Parliament approved The Net-Zero Industry Act recently. Statement-II : The European Union intend…

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Prelims 2024

The organisms "Cicada, Froghopper and Pond skater" are :

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Prelims 2024

Consider the following statements : Statement-I : Many chewing gums found in the market are considered a source of environmental pollution. Statement-II: Many…

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Prelims 2024

Consider the following statements : 1. Lions do not have a particular breeding season. 2. Unlike most other big cats, cheetahs do not roar. 3. Unlike male lion…

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Prelims 2024

Which one of the following shows a unique relationship with an insect that has coevolved with it and that is the only insect that ta pollinate this tree ?

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Prelims 2024

Consider the following : 1. Butterflies 2. Fish 3. Frogs How many of the above have poisonous species among them ?

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Prelims 2024

With reference to perfluoroalkyl and polyfluoroalkyl substances (PFAS) that are used in making many consumer product, consider the following statements : 1. PF…

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Prelims 2024

Consider the following : 1. Carabid beetles 2. Centipedes 3. Flies 4. Termites 5. Wasps Parasitoid species are found how many of the above kind of organisms?

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Prelims 2024

Consider the following statements Statement-I: The Indian Flying Fox is placed under the “vermin” category in the Wild Life (Protection) Act, 1972. Statement-I…

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Prelims 2024

Consider the following materials: 1. Agricultural residues 2. Corn grain 3. Wastewater treatment sludge 4. Wood mill waste Which of the above can be used as fe…

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Prelims 2025

Consider the following types of vehicles: I. Full battery electric vehicles II. Hydrogen fuel cell vehicles III. Fuel cell-electric hybrid vehicles How many of…

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Prelims 2025

Consider the following items: I. Cigarette butts II. Eyeglass lenses III. Car tyres How many of the above contain plastic?

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Prelims 2025

Consider the following statements: Statement I: Activated carbon is a good and an attractive tool to remove pollutants from effluent streams and to remediate c…

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Prelims 2025

Consider the following statements: Statement I: Studies indicate that carbon dioxide emissions from cement industry account for more than 5% of global carbon e…

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Prelims 2025

Consider the following statements: Statement I: At the 28th United Nations Climate Change Conference (COP28), India refrained from signing the 'Declaration on…

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Prelims 2025

Consider the following statements: Statement I: Article 6 of the Paris Agreement on climate change is frequently discussed in global discussions on sustainable…

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Prelims 2025

With reference to 'Direct Air Capture', an emerging technology, which of the following statements is/are correct? I. It can be used as a way of carbon sequestr…

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Prelims 2025

Regarding Peacock tarantula (Gooty tarantula), consider the following statements: I. It is an omnivorous crustacean. II. Its natural habitat in India is only l…

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Prelims 2025

Consider the following statements: I. Carbon dioxide (CO2) emissions in India are less than 0.5 t CO2/ capita. II. In terms of CO2 emissions from fuel combusti…

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Prelims 2025

Consider the following pairs: Plant Description | List I | List II | | --- | --- | | I. Cassava | Woody shrub | | II. Ginger | Herb with pseudostem | | III. Ma…

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Prelims 2025

Artificial way of causing rainfall to reduce air pollution makes use of

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Prelims 2025

Which organization has enacted the Nature Restoration Law (NRL) to tackle climate change and biodiversity loss?

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Prelims 2011

What is the difference between a CFL and an LED lamp? 1. To produce light, a CFL uses mercury vapour and phosphor while an LED lamp uses semiconductor material…

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Prelims 2011

Microbial fuel cells are considered a source of sustainable energy. Why? 1. They use living organisms as catalysts to generate electricity from certain substra…

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Prelims 2016

‘Project Loon’, sometimes seen in the news, is related to -

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Prelims 2019

The word ‘Denisovan’ is sometimes mentioned in the media in reference to -

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Prelims 2020

With reference to carbon nanotubes, consider the following statements: 1. They can be used as carriers of drugs and antigens in the human body. 2. They can be…

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Prelims 2023

Consider the following statements: 1. Carbon fibres are used in the manufacture of components used in automobiles and aircrafts. 2. Carbon fibres once used can…

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Prelims 2024

In which of the following are hydrogels used? 1. Controlled drug delivery in patients 2. Mobile air- conditioning systems 3. Preparation of industrial lubrican…

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Prelims 2011

Two important rivers — one with its source in Jharkhand (and known by a different name in Odisha), and another, with its source in Odisha — merge at a place on…

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Prelims 2013

Which of the following can be found as pollutants in the drinking water in some parts of India? 1. Arsenic 2. Sorbitol 3. Fluoride 4. Formaldehyde 5. Uranium S…

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Prelims 2017

From the ecological point of view, which one of the following assumes importance in being a good link between the Eastern Ghats and the Western Ghats?

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Prelims 2018

With reference to solar power production in India, consider the following statements: 1. India is the third largest in the world in the manufacture of silicon…

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Prelims 2023

With reference to coal-based thermal power plants in India, consider the following statements : 1. None of them uses seawater. 2. None of them is set up in wat…

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Prelims 2014

Consider the following international agreements: 1. The International Treaty on Plant Genetic Resources for Food and Agriculture 2. The United Nations Conventi…

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Prelims 2016

The FAO accords the status of ‘Globally Important Agricultural Heritage Systems (GIAHS)’ to traditional agricultural systems. What is the overall goal of this…

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Prelims 2018

The Partnership for Action on Green Economy (PAGE), a UN mechanism to assist countries transition towards greener and more inclusive economies, emerged at

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Prelims 2020

Consider the following pairs International agreement - Set-up Subject | List I | List II | | --- | --- | | 1. Alma-Ata Declaration | Healthcare of the people |…

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Prelims 2021

Consider the following statements: Statement 1: The United Nations Capital Development Fund (UNCDF) and the Arbor Day Foundation have recently recognized Hyder…

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Prelims 2024

Which one of the following is the correct description of "100 Million Farmers" ?

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Prelims 2025

Which one of the following launched the 'Nature Solutions Finance Hub for Asia and the Pacific'?

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Prelims 2018

Consider the following statements: 1. The Earth's magnetic field has reversed every few hundred thousand years. 2. When the Earth was created more than 4000 mi…

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Prelims 2019

In the context of which of the following do some scientists suggest the use of cirrus cloud thinning technique and the injection of sulphate aerosols into the…

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Prelims 2021

Consider the following statements: 1. The Global Ocean Commission grants licences for seabed exploration and mining in international waters. 2. India has recei…

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Prelims 2021

In case of which one of the following biogeochemical cycles, the weathering of rocks is the main source of release of nutrient to enter the cycle?

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Prelims 2022

Consider the following statements: 1. High clouds primarily reflect solar radiation and cool the surface of the Earth. 2. Low clouds have a high absorption of…

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Prelims 2024

Consider the following statements : Statement-I : The atmosphere is heated more by incoming solar radiation than by terrestrial radiation. Statement-II : Carbo…

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Prelims 2024

Consider the following : 1. Pyroclastic debris 2. Ash and dust 3. Nitrogen compounds 4. Sulphur compounds How many of the above are products of volcanic erupti…

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Prelims 2025

Consider the following statements: I. Without the atmosphere, temperature would be well below freezing point everywhere on the Earth’s surface. II. Heat absorb…

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Prelims 2025

The World Bank warned that India could become one of the first places where wet-bulb temperatures routinely exceed 35°C. Which of the following statements best…

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Prelims 2025

Consider the following statements about ‘PM Surya Ghar Muft Bijli Yojana’ : I. It targets installation of one crore solar rooftop panels in the residential sec…

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Prelims 2011

When the bark of a tree is removed in a circular fashion all around near its base, it gradually dries up and dies because?

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Prelims 2013

Improper handling and storage of cereal grains and oilseeds result in the production of toxins known as aflatoxins which are not generally destroyed by normal…

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Prelims 2014

Which one of the following is the process involved in photosynthesis?

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Prelims 2024

Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow?

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Prelims 2026

Consider the following statements with reference to India's response to climate change : I. India's Long-Term Low Emission Development Strategy (LT-LEDS) is a…

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Prelims 2026

With respect to the Western Hoolock Gibbons, which of the following statements is/are correct ? 1. A Sanctuary in North-east India is home to this ape species…

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Prelims 2026

Which of the following best explain(s) the rationale for protecting mangrove ecosystems in the context of climate resilience ? 1. Mangroves reduce tidal energy…

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Prelims 2026

Which of the following statements with regard to the arrival of Amur Falcons at Doyang Lake in Nagaland each year from Mongolia is/are correct? 1. It showcases…

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Prelims 2026

With reference to Madhav National Park, which of the following statements is/are correct? 1. It was declared a Tiger Reserve in India in 2025. 2. Sakhya Sagar,…

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Prelims 2026

Consider the following statements about Rhynchostylis retusa (Foxtail orchid) : 1. It is an epiphytic orchid. 2. The species is endemic to North-east India. 3.…

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Prelims 2026

At the United Nations Ocean Conference (UNOC) held in June, 2025 in France, the Food and Agricultural Organization (FAO) of the United Nations demonstrated its…

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Prelims 2026

Which one of the following is the first Plan Vivo certified Reducing Emissions from Deforestation and Forest Degradation (REDD+) project in India ?

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Prelims 2026

Which of the following statements with regard to Green Hydrogen is/are correct ? 1. It is decarbonized hydrogen obtained from natural gas reforming combined wi…

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Prelims 2026

Which of the following statements in relation to NIRANTAR (National Institute for Research and Application of Natural Resources to Transform, Adapt and Build R…

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