Question

Bleaching powder is obtained by the action of chlorine gas and

• A. dilute solution of $Ca(OH)_2$
• B. concentrated solution of $Ca(OH)_2$
• C. dry CaO
• D. dry slaked lime

Answer 1

Answer: (D)

dry slaked lime

Answer 2

Bleaching powder is prepared by passing chlorine gas over dry slaked lime $Ca(OH)_2$ by Hesenclaver method or by Bachmann method.
$Ca(OH)_2 + CI_2 \longrightarrow CaOCI_2 + H_2O$