Question

Assertion (A): Concentrated sulphuric acid is kept in air tight bottles.

Reason (R): Air contains impurities, therefore H₂SO₄ will get spoiled.

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:

Concentrated sulphuric acid is kept in air-tight bottles because it is highly hygroscopic and absorbs moisture from the air. Therefore, the Assertion (A) is true.

Air containing impurities is not the reason for keeping concentrated sulphuric acid in air-tight bottles. Therefore, the Reason (R) is false.

Hence, A is true but R is false.