Question

Available chlorine can be liberated from bleaching powder by the reaction with:

• A. $conc.H_{2}S{O}_4$
• B. $dil.H_{2}S{O}_4$
• C. $C{O}_2$
• D. $dil.HN{O}_3$

Answer 1

Answer: (B), (C), (D)

The correct options are
B $dil.H_{2}S{O}_4$
C $C{O}_2$
D $dil.HN{O}_3$

Available chlorine in bleaching powder is the amount of chlorine liberated by the action of dilute acids on bleaching powder.