MCQ
Purification of aluminium done by electrolytic refining is known as
- ASerpeck's process
- BHall's process
- CBaeyer's process
- ✓Hoop's process
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Use $K_{ sp }( ZnS )=1.25 \times 10^{-22}$ and
Overall dissociation constant of $H _2 S , K_{ NET }=K_1 K_2=1 \times 10^{-21}$
Statement $(I)$ : Aqueous solution of ammonium carbonate is basic.
Statement $(II)$ : Acidic/basic nature of salt solution of a salt of weak acid and weak base depends on $\mathrm{K}_{\mathrm{a}}$ and $K_b$ value of acid and the base forming it.In the light of the above statements, choose the most appropriate answer from the options given below :