Practice question

MCQ

Question

Arrange in increasing order of reactivity with NH₂OH: CH₃CH₂CHO, CH₃COCH₂CH₃, C₆H₅CHO.

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CH₃CH₂CHO < C₆H₅CHO < CH₃COCH₂CH₃ C₆H₅CHO < CH₃COCH₂CH₃ < CH₃CH₂CHO CH₃COCH₂CH₃ < C₆H₅CHO < CH₃CH₂CHO Correct CH₃COCH₂CH₃ < CH₃CH₂CHO < C₆H₅CHO

Explanation

Reactivity decreases with steric hindrance and conjugation: CH₃COCH₂CH₃ (ketone) < C₆H₅CHO (aromatic aldehyde) < CH₃CH₂CHO (aliphatic aldehyde).

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