Question

Q69) Graphene is frequently in news. 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.

Which of the statements given above are correct?

• A. (a) 1 and 2 only
• B. (b) 3 and 4 only
• C. (c) 1, 2 and 4 only
• D. (d) 1, 2, 3 and 4

Answer 1

The correct option is C

(c) 1, 2 and 4 only

Answer 69: C

Explanation: Graphene form of carbon consisting of planar sheets (2D structure) which are one atom thick, with the atoms arranged
in a honeycomb-shaped lattice. Graphene is stronger than the steel and a Good conductor of heat and electricity.