Question

Assertion : Reaction of SO₂ and H₂S in the presence of Fe₂O₃ catalyst gives elemental sulphur.

Reason: SO₂ is a reducing agent

(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 correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option  (b) Both A and R are true but R is not correct explanation of A

Explanation:

SO₂ shows both oxidising as well as reducing nature.

The reaction given in assertion is due to oxidising nature of SO₂.

2H₂S + SO₂ → 2H₂O + 3S