Attempt this previous-year question. The correct option stays hidden until you choose.
Graphene is frequently in the news recently. What is its importance?
1. It is a two-dimensional material and has good electrical conductivity
2. It is one of the thinnest but strongest materials tested so far
3. It is entirely made of silicon and has high optical transparency
4. It can be used as ‘conducting electrodes’ required for touch screens, LCDs and organic LEDs
Pick an option to check yourself.
• Correct Answer: C
• Graphene is a one-atom-thick carbon allotrope with exceptional electrical conductivity and tensile strength (~200x steel).
• Statement 3 is incorrect: graphene is carbon-based, not silicon-based; it is used in touch screens, LCDs, and OLED electrodes.
Attempt Prelims MCQs or open Mains questions by paper — then continue the same bank inside the app with visual decks.
GyanGram