MCQ
Which of the following compounds are diprotic
- A${H_2}P{O_5}$
- B${H_2}S$
- C$HCl{O_3}$
- ✓$(a)$ and $(b)$ both
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A current was passed for $10$ hours. $10.8\ g Ag$ was deposited at cathode in $(III)$ electrolytic cell during electrolysis if current efficiency is $50\%.$
If $Z_1,$ $Z_2$ and $Z_3$ be the electrochemical equivalent in the formation of $H_2, Cu$ and $Ag$ respectively, hence $Z_1 : Z_2 : Z_3$ would be