Boiling of hard water is helpful in removing the temporary hardness by converting calcium hydrogen carbonate and magnesium hydrogen carbonate to
- (A) and ✓ Correct
- (B) and
- (C) and
- (D) and
Answer: (A)
Solution
Temporary hardness in water is caused by dissolved calcium and magnesium hydrogen carbonates. On boiling:
The precipitates of and can be removed by filtration, thus removing temporary hardness.
The precipitates of and can be removed by filtration, thus removing temporary hardness.
JEE Main · 2022 · 26 Jun 2022 · Shift 2 · Single correct option