Which among the following are the allotropes of carbon and a pure form of carbon?
a. Diamond
b. Graphene
c. Carborundum
1
Only b
2
Only b and c
3
Only a and b
4
All of the above
Which among the following are the allotropes of carbon and a pure form of carbon?
a. Diamond
b. Graphene
c. Carborundum