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Solution


Q.

Assertion: Addition of HCl (aq.) to HCOOH (aq.) decreases the dissociation of HCOOH (aq.).

Reason: Due to common ion effect of H+, dissociation of HCOOH decreases.
1 If both Assertion and Reason are true Reason is the correct explanation of Assertion  
2 If both Assertion and Reason are true but Reason is not the correct explanation of Assertion  
3 If Assertion is true and Reason is false  
4 If Assertion is false and Reason is true  

Ans.

(1)

If both Assertion and Reason are true Reason is the correct explanation of Assertion