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Q.

Statement I : 0.1M NaCN + 0.05M HCl solution on mixing in equal volume forms a buffer solutionStatement II : The solution after mixing contains a weak acid and its conjugate base and thus acts as buffer

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a

Statement I and II are correct

b

Statement I is correct and Statement II is incorrect

c

Statement - I is incorrect and Statement II is correct

d

Both statement - I  and statement - II are False

answer is A.

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Detailed Solution

On mixing the following reaction occurs.                                                                                    NaCN                       +                         HCl     →                               HCN       + NaClAfter reaction solution is mixture of weak acid and its salt with strong base, thus acts as buffer solution
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