Answer:
(a)
Thus, (A) is
Since, (A) is
Hence, R. is (by
difference)
(A) is
Reactions
[3]
Properties
Conclusion
(A) from 2, 4,-DNP derivatives
(A) Has carbonyl group
(A) reduces Tollen's reagent
Carbonyl group is ?CHO
(A) gives Cannizzaro reaction
(A) Has-CHO group attached towithout
any H
(A)gives, 1,2-benzene dicarboxylic acid
(A)Has benzene nucleus with ?CHO group and alkyl group
in 1,2-position
lodoform test
Silver mirror test
Or
(a)
(i)
(ii)
[1]
(iii)
(b) (i) Aldehydes and ketones with at least one condenses
in presence of base forming a product having ?OH and carbonyl group. This product
is called aldol and reaction is called aldol condensation.
Aldol on heating changes to enol. [1]
(ii) Stephen reaction Nitriles can be converted
aldehydes by reduction using
This is called Stephen reaction.
(i)
Phenol
Benoic acid
(p)
Add neutral solution
Addsolution
Violet colour
Buff coloured ppt
(q)
Add
No reaction
Brisk [1]
Effervescence
(ii)
Benzaldehyde
Acetophenone
(p)
Iodoform test with
No yellow ppt
Yellow ppt of
(p)
Tollen's reagent test
Silver mirror is formed
No reaction [1]
You need to login to perform this action.
You will be redirected in
3 sec