A) acrolein
B) formic acid
C) oxalic acid
D) allyl alcohol
Correct Answer: A
Solution :
Glycerol on heating with potassium hydrogen sulphate gives acrolein. \[\underset{\begin{smallmatrix} | \\ C{{H}_{2}}OH \end{smallmatrix}}{\overset{\begin{smallmatrix} C{{H}_{2}}OH \\ | \end{smallmatrix}}{\mathop{CHOH}}}\,\xrightarrow[{}]{KHS{{O}_{4}}}\underset{\begin{smallmatrix} | \\ CHO \\ Acrolein \end{smallmatrix}}{\overset{\begin{smallmatrix} C{{H}_{2}} \\ || \end{smallmatrix}}{\mathop{CH}}}\,+2{{H}_{2}}O\]
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