Question

Bleaching powder reacts with dilute acids to evolve chlorine. The chlorine liberated by the action of dilute acids on bleaching powder is called available chlorine.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (B)

If both assertion and reason are true but reason is not the correct explanation of assertion

Answer 2

The reaction involved is $CaOCl_{2} + H_{2}SO_{4} \rightarrow CaSO_{4} + H_{2}O + Cl_{2}$ The available chlorine may be defined as the $\%$ of chlorine liberated when one mole of bleaching powder $(127\, g)$ is treated with excess of dilute $H_2SO_4$.