Question

Assertion(A): Graphite is a good conductor of electricity.

Reason(R): In graphite, carbon atoms are loosely bonded.

• A. Both A and R are true and R is the correct explanation of A.
• B. Both A and R are true, but R is not the correct explanation of A.
• C. A is true and R is false.
• D. A is false and R is true.

Answer 1

The correct option is C

A is true and R is false.

Assertion(A):

• Graphite is a good conductor of electricity.
• Each carbon atom is graphite and is bonded to another three carbon atoms which leave one electron free.
• This free electron is responsible for the good conductivity of graphite.

So, the statement is correct.

Reason(R):

• In graphite, carbon atoms are strongly covalent bonded to other carbon atoms.

So, the statement given for reason is false.

Hence, the correct option is (C).