The method of preparation of bleaching powder is:

i. Chlorine gas is used for the manufacture of bleaching powder.

ii. When dry slaked lime is passed through chlorine gas, it forms bleaching powder.

iii. The reaction takes place is given as:

Uses of bleaching powder:

i. It is used for disinfecting drinking water to make it germfree.

ii. It is used for bleaching cotton and linen in the textile industry.

iii. It is used to bleach dirty clothes in the laundry.

iv. It is used as an oxidizing agent in many chemical industries.

v. It is used for bleaching wood pulp in paper factories.