Question

Question 16 : Artificial graphite can be produced on a large scale by heating
Carbon with silica
Carbon with silica
Coke with silica
Charcoal with silica

Question 17 : Diamond behaves as an insulator because------
It is used as an jewelry
It is made of carbon
It is a solid
It does not have mobile electrons

Question 18 : Which of these elements of group IV can form compounds easily in +2 oxidation state
C
Pb
Ge
Si

Question 19 : Which of these is not a component of lead-acid battery?
spongy lead
lead chloride
tetrehydrooxsulphate(VI) aci
lead oxide

Question 20 : An example of amorphous form of carbon is-----
Graphite
Carbon monoxide
LampblacK
Diamond

Answer 1

Coke with silica
It does not have mobile electrons
Pb
lead chloride
LampblacK