In which of the following respective volume ratios should \( 0.1 \mathrm{M} \mathrm{NH}_{4} \mat...

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In which of the following respective volume ratios should \( 0.1 \mathrm{M} \mathrm{NH}_{4} \mathrm{OH} \) solution \& \( 0.1 \mathrm{M} \mathrm{HCl} \) solution be mixed, \( s \) s that the resulting solution behaves like a buffer solution ?
(A) \( 1: 1 \)
(B) \( 2: 1 \)
(C) \( 1: 2 \)
(D) No such volume ratio is possible
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