MCQ
Which of the following compound will react with ethanolic $KCN$
- AEthane
- BAcetyl chloride
- CChlorobenzene
- ✓Benzaldehyde

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Product $(B)$ and $(D) $ in the above reaction are

${H_2}O\, \rightleftharpoons \,{H^ + } + O{H^ - }$ at $25\,^oC$ is.....$kJ$
$(a)\,\,B\,\,\,\,\,\,\,\,\,\,(b)\,\,Mg\,\,\,\,\,\,\,\,\,\,\,\,(c)\,\,Li\,\,\,\,\,\,\,\,\,\,\,\,(d)\,\,Al\,\,\,\,\,\,\,\,\,\,\,(e)\,\,K$