A) \[{{H}_{2}}C=O>{{R}_{2}}C=0>A{{r}_{2}}C=O>RCHO\] \[>ArCHO\]
B) \[{{H}_{2}}C=O>RCHO>ArCHO>{{R}_{2}}C=O\] \[>A{{r}_{2}}C=O\]
C) \[ArCHO>A{{r}_{2}}C=O>RCHO>{{R}_{2}}C=O\] \[>{{H}_{2}}C=O\]
D) \[A{{r}_{2}}C=O>{{R}_{2}}C=O>ArCHO>RCHO\] \[>{{H}_{2}}C=O\]
Correct Answer: B
Solution :
The decreasing reactivity order of carbonyl compounds for nucleophilic addition reaction is as: \[{{H}_{2}}C=O>RCHO>ArCHO>{{R}_{2}}C=O\] \[>A{{r}_{2}}C=O\]
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