Consider the following statements Hard water is not sutiable for 1 drinking 2 washing clothes with s...........

Science Affairs Chemistry

Consider the following statements

Hard water is not sutiable for

1. drinking

2. washing clothes with soap

3. use in boilers

4. irrigating crops

Which of these statements are correct?

1 and 3

2 and 3

1, 2 and 4

1, 2, 3 and 4

All codes are correct.

Hard water is made up of calcium and magnesium salts. It is not used in industrial boilers, as it forms insoluble salts of calcium and magnesium. As a result, they produce scales on the inner walls of the boilers which reduces the heating efficiency. They also cause corrosion in the boilers.
Hardness of water is due to presence of chlorides sulphates and nitrates of calcium and magnesium. Hard water cannot be used for washing purposes as soap do not form lather with hard water easily which results in to wastage of soap in laundaries.
Moreover hard water is not fit for drinking purpose as it hinders ionic imbalance in body. Repeated irrigation of crops by hard water increases calcium and magnesium ions in soil which increases soil alkalinity.

Hence option 4th is correct.