2. Write the uses of bleaching powder, alum and calcium sulphate. (3)
Ans.
Answers
Answer:
Bleaching powder:
It is used for bleaching dirty clothes in the laundry, as a bleaching agent for cotton and linen in the textile industry. It is a strong oxidizing agent, hence used as an oxidizer in many industries. It is used as a disinfectant which is used for disinfecting water to make potable water.
Alum:
purification of drinking water as a chemical flocculant.
in styptic pencil to stop bleeding from minor cuts.
the adjuvant in vaccines ( a chemical that enhances the immune response)
deodorant "rock"
pickling agent to help keep pickles crisp.
flame retardant.
the acidic component of some types of baking powder.
Calcium sulphate:
Its major use is in the manufacture of Plaster of Paris. ... Calcium Sulphate is used in tofu as a coagulant. The compound was used to make sulphuric acid before the 1970s. Used as a moisture indicator.
Explanation:
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