1.

At higher temperature, iodoform reaction is given by the dilute solution ofA. `CH_(3)CO_(2)CH_(3)`B. `CH_(3)CO_(2)C_(2)H_(5)`C. `CH_(3)CO_(2)C_(6)H_(5)`D. `C_(2)H_(5)CO_(2)CH_(3)`

Answer» Correct Answer - B
Formation of iodoform is commonly used as a test for alcohola having `-CH(OH)CH_(3)`, grouping, acetaldehyde and ketones having at least one alkyl group as methyl group. i.e., for detecting the presence of `-CHOH. CH_(3) : -COCH_(3)` and `CH_(3) CHO`. The esters (as given in the options) are hydrolsed into alcohol or acids.
`CH_(3) COOC_(2)H_(5) overset (H_(2)O) underset (heat) to CH_(3)COOH + C_(2)H_(5)OH`
Ethyl alcohol so formed will give iodoform test.
`C_(2)H_(5)COOCH_(3) rarr C_(2)H_(5)COOH + CH_(3)`
Hence it will not give iodoform test.


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