60.

61.

62.

63.

64.

65.

028/22

Identify the wrong statement.

A) The base-catalysed o-halogenation of propanone is first order with respect to
base.

8) The rate constant for the base-catalysed o-halogenation of propanone
decreases in the order Cl, > 812 > ‏.وا‎

©) The base-catalysed o-halogenation of propanone proceeds easily to give 1, 1,
1-trihalopropanone, an unsymmetric polyhalo ketone.

0) Polyhalogenation of propanone is difficult under acidic conditions, but the
products are the same as those obtained under basic conditions.

Identify the product of Knoevenagel reaction.
A) Primary and secondary amine B) Unsaturated acyclic system
C) Beta keto ester D) Acid anhydride

Identify the starting reagents in Dieckman Condensation ?

A) One molecule with an ester towards the end of the molecule
B) Two molecules of ester

C) One molecule of ester and enolate

D) One molecule with two ester towards the end of the molecule

Identify the wrong articulation about Claisen condensation.

A) A -keto ester is formed and the product undergo further deprotonation by the
strong base.

B) Claisen condensation involves the condensation of two esters in the presence
of strong base.

C) A strong base is required to remove H* from an a-H position of the starting
ester.

D) Allthe above statements are correct

A carbonyl compound reacts with an ylide to form an alkene. Identify the reaction.
A) Aldol reaction B) Wittig reaction
C) Wolf Kishner reaction D) Reformatsky reaction

Which of the following compounds does not contain an active methylene group ?
A) Ethylacetoacetate 8) Diethylmalonate
C) Diethylfumarate D) Cyanoacetic ester

-11-