NEET Chemistry: Chemistry of Everyday Life questions with solutions

Q1. Zeolite used to soften hardness of water is, hydrated:

1. Potassium aluminium borate
2. Sodium aluminium silicate
3. Calcium aluminium borate
4. zinc aluminium borate

Answer: Sodium aluminium silicate

Zeolites used for softening hard water are hydrated sodium aluminosilicates. Their sodium ions exchange with calcium and magnesium ions in hard water, removing hardness.