Question

Question 1 : Activated charcoal is used
in refrigeration
in jewellery
as decolourizing agent
in cutting

Question 2 : Which of these is used in making crucible?
coke
graphite
Diamond
coal

Question 3 : The structure of graphite is-----
Regular tetrahedral planar
Regular planar hexagonal
Irregular planar hexagonal
Irregular tetrahedral octagonal

Question 4 : Each carbon in Diamond is bonded to
4 Carbon atoms
3 Carbon atoms
2 Carbon atoms
6 Carbon atoms

Answer 1

in refrigeration.

graphite.

Regular planar hexagonal

4 Carbon atoms