NEET2014ChemistryHydrogenActual
Assertion: Permanent hardness of water is removed by treatment with washing soda. Reason: Washing soda reacts with soluble calcium and magnesium chlorides and sulphates in hard water to form insoluble carbonates.
Options
- AIf both assertion and reason are true and reason is the correct explanation of assertion.
- BIf both assertion and reason are true but reason is not the correct explanation of assertion.
- CIf assertion is true but reason is false.
- DIf both assertion and reason are false.
Correct answer
A. If both assertion and reason are true and reason is the correct explanation of assertion.
Step-by-step solution
aligned & MCl ₂+ Na ₂ CO ₃ MCO ₃ +2 NaCl & MSO ₄+ Na ₂ CO ₃ M MO ₃ + Na ₂ SO ₄ aligned (where, M= Mg , Ca )