Question

After understanding the assertion and reason, choose the correct option. 

Assertion : NaCl reacts with concentrated H₂SO₄ to give colourless fumes with pungent smell. But on adding MnO₂ the fumes become greenish yellow. 

Reason : MnO₂ oxidises HCl to chlorine gas which is greenish yellow. 

(a) Assertion and reason are correct and reason is the correct explanation for the assertion. 

(b) Assertion and reason are correct but reason is not the correct explanation for the assertion. 

(c) Assertion is correct, reason is incorrect. 

(d) Assertion is incorrect, reason is correct.

Answer 1

Correct option (a)

Explanation:

Colourless fumes of HCl become greenish yellow because MnO₂ oxidises HCl to chlorine gas.