Question

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

Reason(R): Graphite has free electrons.

• 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 A

Both A and R are true and R is the correct explanation of A.

The explanation for the correct option:

Assertion(A):

• Graphite is an allotrope of carbon and is a good conductor of electricity.
• So, the statement is true.

Reason(R):

• In graphite one carbon atom is bonded to the other three carbon atoms leaving one free electron.
• Thus, there are free electrons in graphite due to which it conducts electricity.

So, both the statements are correct, and R is the correct explanation for A.

Hence, the correct option is (A).