| Graphene is frequently in news recently. What is its importance? |
| 1. lt 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) 1 and 2
B) 3 and 4
C) 1, 2 and 4
D) All of these
Correct Answer: C
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