Question

Assertion (A): Impurity of arsenic oxide must be removed before passing the mixture of SO₂ and air through the catalytic chamber.

Reason (R): Arsenic oxide poisons the catalyst.

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

(1)

Explanation:

The impurity of arsenic oxide must be removed before passing the mixture of SO₂ and air through the catalytic chamber because it affects the catalyst. Therefore, the Assertion (A) is true.

Arsenic oxide poisons the catalyst and reduces its catalytic activity. Therefore, the Reason (R) is true.

Hence, both A and R are true and R is the correct explanation of A.