Aldehydes, Ketones and Carboxylic Acids  MCQs

MCQs of Aldehydes, Ketones and Carboxylic Acids

Showing 101 to 110 out of 162 Questions
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101.
With which of the following reagents, will aldehyde and ketone both react ?
(i) Fehling (A + B)                                (ii) Tollen’s reagent
(iii) Grignard’s reagent                       (iv) H2 / Ni
(a) (i) and (iii)
(b) (iii) and (iv)
(c) (i) and (iv)
(d) (ii) and (iv)
Answer:

Option (b)

102.
CH3CHO A →LiAIH4 B →O C →KOHNH2NH2 D D = _____.
(a) Ethanal
(b) Ethanol
(c) Ethane
(d) Acetone
Answer:

Option (c)

103.
By which of the following reactions, will acetic acid be not formed ?
(a) CH3CHO  →Br2 /H2O
(b) CH3COCH3  →KMnO4 /H2SO4
(c) CH3CONH2 + H2O  →aq. H2SO4
(d) CH3CONH2  →Br2/NaOH
Answer:

Option (d)

104.
An aldehyde X forms silver mirror in Tollen’s test but it does not give Fehling test and Benedict test. When reacted with  CH3MgI an intermediate is formed which on hydrolysis gives 1 -phenyl-1 -ethanol. Identify the aldehyde X
(a) Acetaldehyde
(b) Benzaldehyde
(c) Acrolein
(d) Phthalaldehyde
Answer:

Option (b)

105.
What is used to preserve dead animal bodies ?
(a) H·COOH
(b) CH3COOH
(c) H·CHO
(d) CH3CHO
Answer:

Option (c)

106.
4 - 6 % concentrated aqueous solution of _____ is used to get delicious sour taste in food.
(a) formic acid
(b) acetone
(c) acetic acid
(d) benzoic acid
Answer:

Option (c)

107.
What is used to impart silver like shining to mirror ?
(a) Acetaldehyde
(b) Benzaldehyde
(c) Acetone
(d) methyl ethyl ketone
Answer:

Option (a)

108.
What is used to prepare bakelite plastic ?
(a) Acetone
(b) Methanal
(c) Benzaldehyde
(d) Acetophenone
Answer:

Option (b)

109.
What is IUPAC name for isophthalic acid ?
(a) Benzene - 1, 3 dicarboxylic acid
(b) Benzene - 1, 4 dicarboxylic acid
(c) Benzene - 1, 2 dicarboxylic acid
(d) Benzene - 1, 5 dicarboxylic acid
Answer:

Option (a)

110.
What is the common name of HOOC - (CH2)4 - COOH ?
(a) Malonic acid
(b) Glutaric acid
(c) Succinic acid
(d) Adipic acid
Answer:

Option (d)

Showing 101 to 110 out of 162 Questions
8 9 10 11 12 13