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Solution


Q.

Assertion: Hard water contains magnesium and calcium salts.

Reason: It is because they are easily available in hard water.
1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct, but reason is not the correct explanation of assertion.  
3 Assertion is true, but reason is false.  
4 Assertion is false, but reason is true.  

Ans.

(1)

Hard water contains magnesium and calcium salts because they are easily available.