Question

Assertion: Calgon is used for removing `Ca^(2+) and Mg^(2+)` ions from hard water. Reason: Calogon forms precipatate with `Ca^(2+) and Mg^(2+)` ions.

Answer 1

(d) Correct assertion: Calgon makes `Ca^(2+) and Mg^(2+)` ions present in hard water ineffective.
Correct reason: Calogon forms soluble complex with `Ca^(2+) and Mg^(2+) ions`.