A compound that gives a positive iodoform test is

Engineering

Chemistry

Chemical Reaction of Aldehyde and Ketones

Question

3-pentanone

3-pentanol

1-pentanol

2-pentanone

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The iodoform test detects methyl ketones (R-CO-CH₃) or alcohols that can be oxidized to methyl ketones (like CH₃CH(OH)R).

Let's analyze the options:

• 3-pentanone: CH₃CH₂COCH₂CH₃ (not a methyl ketone)

• 3-pentanol: CH₃CH₂CH(OH)CH₂CH₃ (oxidizes to 3-pentanone, not methyl ketone)

• 1-pentanol: CH₃(CH₂)₃CH₂OH (oxidizes to aldehyde, not ketone)

• 2-pentanone: CH₃COCH₂CH₂CH₃ (methyl ketone - positive test)

Final answer: 2-pentanone