Question

Out of ch3ch2coch2ch3 and ch3ch2ch2coch3 which gives iodoform test

Answer 1

The one which give iodoform test is CH₃CH₂CH₂COCH₃.

Iodoform a reaction which is typical for the secondary alcohol of ketone with a methyl group.

What is mean is that for ketone like the one above, there is a methyl group in it hence it gives positive iodoform reaction.That is CH₃CH₂CH₂COCH₃.

The one in bold is the methyl group which I mean.

Iodoform reaction when positive leads to the formation of a characteristic yellow precipitate.

Answer 2

Hey !!

CH₃CH₂CH₂COCH₃ will give iodoform test as it has a terminal methyl ketone group.

Good luck !!