Allotropes of Carbon

Which of the following option is not allotropes of carbon ?

When graphite is subjected to an electric arc in the presence of inert atmosphere, it gives $\_\_\_$

The number of six membered and five membered rings in Buckminster Fullerence respectively is

Assertion: Among the carbon allotropes, diamond is an insulator, whereas, graphite is a good conductor of electricity.

Reason: Hybridization of carbon in diamond and graphite are $\mathrm{s}{\mathrm{p}}^3$ and $\mathrm{s}{\mathrm{p}}^2$ respectively.

Explain the differences in the properties of diamond and graphite on the basis of their structures.

Statement $\mathrm{I}$: Graphite behaves as a lubricant.

Statement $\mathrm{II}$: The layers of carbon atoms in graphite can slip past one over another.

Statement $\mathrm{I}$: Diamond is used as a precious stone.

Statement $\mathrm{II}$: In diamond, carbon atoms are tetrahedrally arranged.

The form of carbon obtained from the incomplete combustion of oil is called as

Fullerene with formula ${\mathrm{C}}_{60}$ has a structure where every carbon atom is;

What are fullerenes? Why are they so called?

Bucky ball or buck minster fullerene is :

If $\mathrm{x}$ pentagonal rings and $\mathrm{y}$ hexagonal Rings are present in fullerene of $\mathrm{z}$ carbon atoms then :-

Thermodynamically the most stable form of carbon is 

Find out the difference between — Diamond and graphite.

_____ is inorganic graphite.

Why diamond is hard and graphite is soft?

Name the allotropes of carbon.

Which allotrope of carbon is a good conductor of electricity?

Thermodynamically the most stable form of carbon is:

The allotrope of carbon, which is thermodynamically most stable is