Order of reactivities of carbonyl compounds towards nucleophilic addition reactions is:

III < II < I < IV

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IV < I < III < II

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I < IV < II < III

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IV < I < II < III

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Solution

The correct option is D IV < I < II < III
The electron withdrawing group increases the rate of reaction by increasing electron deficiency on a carbonyl carbon.
$- N O_{2}$ is electron withdrawing group through mesomeric effect.
$O C H_{3}$ is electron donating group through mesomeric effect.

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Order of reactivities of carbonyl compounds towards nucleophilic addition reactions is:

The correct option is D IV < I < II < IIIThe electron withdrawing group increases the rate of reaction by increasing electron deficiency on a carbonyl carbon.−NO2 is electron withdrawing group through mesomeric effect.OCH3 is electron donating group through mesomeric effect.

The correct option is D IV < I < II < III
The electron withdrawing group increases the rate of reaction by increasing electron deficiency on a carbonyl carbon.
$- N O_{2}$ is electron withdrawing group through mesomeric effect.
$O C H_{3}$ is electron donating group through mesomeric effect.