Question

7. Hardness of water is due to the presence of
a. Salts of sodium and potassium
b. Salts of calcium and magnesium
Salts of copper and zinc
d. Salts of sodium and magnesium
of water can be removed by
C.
Тт.​

Answer 1

Answer:

option 2 is correct

I hope it will help you

Answer 2

Answer:

hi

Explanation:

B. Salts of calcium and magnesium

Hope it will help you.