1.

Assertion (A): On addition of `NH_(4)CI` to `NH_(4)OH, pH` decreases but remains grater than `7`. Reason (R) : Addition of `overset(o+)NH_(4)` ion decreases ionication of `NH_(4)OH`, thus `[overset(Theta)OH]` decreases and also `pH` decreases.A. If both (A) and (R) are correc, and (R) is the correct explanation of (A).B. If both (A) and (R) are correct but (R) is not the correct explanation of (A).C. If (A) is correct, but (R) is incorrect.D. If (A) is incorrect, but (R) is correct.

Answer» Correct Answer - A
Both `(A)` and `(R)` are true. A basic buffer is formed whose `pH` is always `gt7`.


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