MCQ
Among the following, the strongest base is
- A$C_6H_5NH_2$
- B$p-NO_2-C_6H_4NH_2$
- C$m-NO_2-C_6H_4NH_2$
- ✓$C_6H_5CH_2NH_2$
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Reason : Cuprous ion $(Cu^+)$ is colourless whereas cupric ion $(Cu^{2+})$ is blue in the aqueous solution.

The equilibrium constant for the reaction is $K_{p}=4$, At equilibrium, the partial pressure of $\mathrm{O}_{2}$ is $....\,atm.$ (Round off to the nearest integer).
