Which one of the following pairs gives effervescence with aq. NaHCO_(3)? I. CH_(3)COCl II. CH_(3)COCH_(3) III. CH_(3)COOCH_(3) IV. CH_(3)COOCOCH_(3)

Which one of the following pairs gives effervescence with aq. NaHCO_(3

1.	Which one of the following pairs gives effervescence with aq. NaHCO_(3)? I. CH_(3)COCl II. CH_(3)COCH_(3) III. CH_(3)COOCH_(3) IV. CH_(3)COOCOCH_(3)
Answer» I and II I and IV II and III I and III Solution :Both `CH_(3)COCL` and `CH_(3)COOCOCH_(3)` react with `H_(2)O` to produce acid and hence GIVE effervescence with aqueous `NaHCO_(3)`