Question

Assertion (A): SO₂ and CO₂ can be distinguished by lime water.

Reason (R): Both turn lime water milky.

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

(4)

Explanation:

Sulphur dioxide and carbon dioxide cannot be distinguished using lime water because both gases give a milky appearance with lime water. Therefore, the Assertion (A) is false.

Both SO₂ and CO₂ turn lime water milky due to the formation of insoluble calcium salts. Therefore, the Reason (R) is true.

Hence, A is false but R is true.