Question

(iv)
(v)
(vi
3.
G
(i
E
Choose the correct option.
1. Which of the following is an amorphous or a microcrystalline form of carbon?
(a) Graphite
(b) Fullerene
(c) Diamond
(d) Coke
2. Which of the following conditions are required for the formation of diamond?
(a) Very high temperature and pressure
(b) Very high temperature, but a very low pressure
(c) Very low temperature, but a very high pressure
(d) Very low temperature and pressure
3. What is the lead' of a pencil made of?
(a) Clay
(b) Graphite
(c) A mixture of clay and graphite
(d) Lead metal
4. Which of the following will give carbon dioxide on being heated in an excess of oxygen?
(a) Diamond
(b) Graphite
(c) Charcoal
(d) All of these
5. Which among the following has the largest surface area?
(a) Diamond
(b) Wood charcoal
(c) Graphite
(d) Activated charcoal
6. Which of the following is water gas?
(a) Air dissolved in water
(b) Water vapour present in air
(c) A mixture of CO and H
(d) A mixture of CO and H.O (steam)
Fill in th
1. CI
2. G
3. C
4.
5.
6.​

Answer 1

Answer:

1 D) coke

2 (a) Very high temperature and pressure

3 b) graphite

4 d) all of these

5 a) diamond

6 (d) A mixture of CO and H.O (steam)