MCQ
Which compound on electrolysis produces $H_2$ gas at both electrode?
  • A
    $MgH_2$ (molten)
  • B
    $HCl$ (aq)
  • C
    $NaH$ (molten)
  • $CaH_2$ (aq)

Answer

Correct option: D.
$CaH_2$ (aq)
d

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

The Henry's law constant for solubility of $N_2$ gas in water at $25\,^oC$ is $1 \times 10^5\ atm$ . The mole fraction of $N_2$ in air is $0.8$ . The number of moles of $N_2$ from air that will dissolve in $10\, moles$ of $H_2O$ at $25\,^oC$ and at $5\ atm$ pressure
The most appropriate reagent for conversion of $C _{2} H _{5} CN$ into $CH _{3} CH _{2} CH _{2} NH _{2}$ is
Find the species having the magnetic moment value of $5.92\   BM$
Which of the following trivalent ion has the largest atomic radii in the lanthanide series
The ether that undergoes electrophilic substitution reactions is
If Solubility of $H_2S$ in water at $STP$ is $0.195\, m$, ........ $bar$ is the value of $K_H$.
The Freezing point of $1\%$ aqueous solution of calcium nitrate will be
$\begin{matrix}
   \,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,Br\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   \,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,|\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,  \\
   C{{H}_{2}}-CH=CH-C{{H}_{2}}\xrightarrow{Zn\,(dust)}(A)  \\
\end{matrix}$

Above reaction is an example of $1,4$ -elimination. Predict the product.

Which of the following solutions will have the highest boiling point
When chlorine reacts with cold and dilute solution of sodium hydroxide , the products obtained are