Aldehydes, Ketones and Carboxylic Acids  MCQs

MCQs of Aldehydes, Ketones and Carboxylic Acids

Showing 41 to 50 out of 162 Questions
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41.
What is the correct order of boiling point for butan - 1 - ol, butanal, butane and diethyl ether ?
(a) butan - 1 - ol > butanal > diethyl ether > butane.
(b) butanal > butan - 1 - ol > diethyl ether > butane
(c) diethyl ether > butanal > butan - 1 - ol > butane.
(d) butane > diethyl ether > butanal > butan - 1 - ol.
Answer:

Option (a)

42.
Which of the following compounds is more reactive towards nucleophillic addition reaction ?
(a) Ethyl phenyl ketone
(b) Acetophenone
(c) Benzaldehyde
(d) Benzophenone
Answer:

Option (c)

43.
What reaction is required if methane is to be obtained from the product of oxidation of acetaldehyde by KMnO4 ?
(a) Tollen's reaction
(b) Aldol condensation
(c) Reduction by LiAlH4 
(d) Decarboxylation by sodalime
Answer:

Option (d)

44.
Which of the following carbonyl compounds does not show addition reaction with sodium hydrogen sulphite ?
(a) Acetaldehyde
(b) Acetone
(c) Acetophenone
(d) Benzaldehyde
Answer:

Option (c)

45.
X + HCN →OH- cyanohydrin →dil . HCLhydrolysis lactic acid. What is X ?
(a) Acetaldehyde
(b) Acetone
(c) Propanal
(d) Acetophenone
Answer:

Option (a)

46.
Which of the following tests is given by only aliphatic aldehydes but not by aromatic aldehydes ?
(a) Tollen's test
(b) Fehling test
(c) Benedict test
(d) All of the above
Answer:

Option (b)

47.
In which of the following is Rochelle salt is used as a reagent ?
(a) Tollen's test
(b) Fehling test
(c) Wolff kishner reduction
(d) Benedict test
Answer:

Option (b)

48.
What is used as reagent in Benedict solution ?
(a) Alkaline sodium potassium tartarate
(b) Alkaline sodium potassium citrate
(c) Ammoniacal silver nitrate
(d) Rochelle salt
Answer:

Option (b)

49.
Which of the following is oxidised by bromine water ?
(a) Acetone
(b) Acetophenone
(c) Butan - 2 -one
(d) Ethanal
Answer:

Option (d)

50.
Which of the following reactions will be used to prepare ethyl benzene from acetophenone ?
(a) Clemmensen reduction
(b) Grignard reagent
(c) Condensation reaction
(d) Cannizzaro reaction
Answer:

Option (a)

Showing 41 to 50 out of 162 Questions
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