1.

Amongst the following compounds, the one which would not respond to iodoform test is

Answer»

`CH_(3)CH(OH)CH_(2)CH_(3)`
`ICH_(2)COCH_(2)CH_(3)`
`CH_(3)COOH`
`CH_(3)CHO`

Solution :Option (a) is a methylcarbinol and hence gives iodoform test. `CH_(3)CHO` CONTAINS the group `CH_(3)CO` attached to H and hence gives iodoform test. Option (b) is the FIRST iodination product of a methyl ketone and hence gives iodoform test.
`ICH_(2)COCH_(2)CH_(3) overset(I_(2)//NaOH)to I_(3)C-COCH_(2)CH_(3) overset(OH^(-))to CHI_(3)+CH_93)CH_(2)COONaCH`
`CH_(3)COOH` does not contain a `CH_(3)CO-` group attached to H or C and hence does not give iodoform test.


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