Question

State one use of each of the following salts :-
a. Sodium benzoate......
b. Potassium nitrate.....
c. Calcium sulphate.......
d. Bleaching powder......
e. Alum..​

Answer 1

Answer:

d.Bleaching powder removes permenent hardness of water.

Answer 2

Answer:

Here's Your Answer

Explanation:

Uses -

1) Sodium benzoate is commonly used as a preservative in cosmetics and personal care items, such as hair products, baby wipes, toothpaste, and mouthwash ( 2 ). It also has industrial uses. One of its biggest applications is to deter corrosion, such as in coolants for car engines ( 2 , 7).

2) Major uses of potassium nitrate are in fertilizers, tree stump removal, rocket propellants and fireworks. It is one of the major constituents of gunpowder (black powder). In processed meats, potassium nitrate reacts with hemoglobin and generates a pink color.

3) The main use of calcium sulfate is to produce plaster of Paris and stucco. These applications exploit the fact that calcium sulfate which has been powdered and calcined forms a moldable paste upon hydration and hardens as crystalline calcium sulfate dihydrate.

4) 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.

5) Alum is most commonly used in pharmaceutical, cosmetic industry and food industries