An example of a reversible reaction is

Options

A. (A) `Pb(NO_(3))_(2)(aq)+2Na!(aq)iffPbl_(2)(S)+2NaNO_(2)(aq)`
B. (B) `AgNO_(3)(aq)+HC!(aq)iffAgCl(S)+HNO_(3)(aq)`
C. (C) `2Na(S)+H_(2)O(l)iff2NaOH(aq)+H_(2)(g)`
D. (D) `KNO_(3)(aq)+NaCl(aq)iffKCl(aq)+NaNO_(3)(aq)`

Answer

D

Explanation

Precipitation reactions, acid base reactions and reactions in which gases are liberated and are taking place in open container will be irreversible reactions.