Entry Test MCQ :: Aldehydes and Ketones

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31.

For aldol condensation the conditions necessary

A.	?-C	B.	?-H
C.	Basic medium	D.	All

32.

Aldehydes are reduced to

A.	P? alcohol	B.	S? alcohol
C.	T? alcohol	D.	Not possible

33.

Tetrahydroborate ion is the source of

A.	proton	B.	H+
C.	both a & b	D.	H-

34.

Which of the following is a symmetrical ketone

A.	3 - hexanone	B.	acetone
C.	butanone	D.	2-pentanone

35.

Dry distillation of calcium acetate results in the formation of

A.	formaldehyde	B.	acetaldehyde
C.	methane	D.	acetone

36.

In base catalyzed reaction of carbonyl compound the catalyst

A.	increases the nucleophilic character of reagent	B.	increases electrophilic character of carbonyl compound
C.	acidic character of reagent	D.	both a and b

37.

Cannizaros reaction takes place through the transfer of _______ from complex anion.

A.	hydrogen ion	B.	hydride ion
C.	oxide ion	D.	methoxide ion

38.

Iodoform test can be used to distinguish between

A.	ethanol and methanol	B.	acetaldehyde and methanal
C.	acetone and diethyl ketone	D.	all of the above