NCERT Class XII Chemistry
Chapter - Aldehydes, Ketones and Carboxylic Acids
Questions with Solutions

(a) The given compound does not reduce Tollens’ reagent which implies that it is not an aldehyde.
(b) Positive iodoform test proves that it has a CH3−

O ||

C

− group.
(c) The oxidation products are indicative of the presence of 5 carbon atoms.
To find the exact molecular formula
%C = 69.77%, %H = 11.63%, %O = 100 – (69.77 + 11.63) = 18.6 %
C:H:O=

69.77

12

:

11.63

1

:

18.6

16

The structure based on inferences a, b and c is
H3C−

O ||

C

−CH2CH2CH3
Reactions involved are :