Mention few use of :
Bleaching powder (`CaOCl_2`).

Explanation

The uses of bleaching powder are :
(i) In the paper pulp industry, textile industry, etc. as bleaching agent.
(ii) For bleaching washed clothes in laundry.
(iii) In sterilisation of water, as disindectant, as germicide, etc.
(iv) As an oxidising agent in many chemical industries