Question

Assertion (A): Ammonia does not conduct electricity in gaseous or liquid state.

Reason (R): Ions in ammonia gas or liquid ammonia are not free to move.

1. Both A and R are true and R is the correct explanation of A.
2. Both A and R are true but R is not the correct explanation of A.
3. A is true but R is false.
4. A is false but R is true.

Options

• (1)

• (2)

• (3)

• (4)

Answer 1

(3)

Explanation:

Ammonia does not conduct electricity in the gaseous state or in pure liquid state because it does not contain sufficient free ions to carry electric current. Therefore, the Assertion (A) is true.

The statement that ions are present but are not free to move is incorrect. In gaseous or pure liquid ammonia, free ions are practically absent, rather than being present and immobile. Therefore, the Reason (R) is false.

Hence, A is true and R is false.