The change in colour of the moist litmus paper in the given set up is due to\ i. presence of acid\

Question

The change in colour of the moist litmus paper in the given set up is due to\  i. presence of acid\ ii. presence of base\ iii. presence of $\mathrm{H}^{+}(a q)$ in the solution\ iv. presence of Litmus which acts as an indicator\

Professor PC Thomas Classes · Answer

(c)