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ECAT Chemistry Chapter 24 Carboxylic Acid Online Test MCQs With Answers
Question # 1
A peptide having molecular mass upto 10,000 is called a
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Vitamin
Protein
Polypeptide
Dipetide
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Question # 2
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It decolourises aqueous bromine rapidly
It is insoluble in water
It reduces Fehling's reagent
Two molecules react with each other in the presence of a strong acid
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Question # 3
When propanamide reacts with Br
2
and NaOH then which of the following compounds is formed?
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Ethyl alcohol
Propyl alcohol
Propyl amine
Ethylamine
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Question # 4
Caroxyl group has functional in it.
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one
two
three
four
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Question # 5
Glutamic acid, aspartic acid are ______ amino acid
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Acidic
Basic
Neutral
None of these
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Question # 6
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Acidic amino acid
Basic amino acid
Neutral amino acid
None of these
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Question # 7
Carboxylic acids functional group is:
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----COOH
-----COH
----CO---
----OH
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Question # 8
Hydrolysis of alkyl nitriles gives:
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alkane
alkyl halide
alkyl nitride
carboxylic acids
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Question # 9
The solution of which acid is used for seosoning of food ?
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Formic acid
Acetic acid
Benzoic acid
Butanoic acid
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Question # 10
A carboxylic acid with one caboxyl group:
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Monocarboxylic acid
Dicarboxylic acid
Tricarboxylic acid
Polycarboxylic acid
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Question # 11
A carboxylic acid containing Ar group in it is called:
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Aromatic carboxylic acid
Allphatic carboxylic acid
Dicarboxylic acid
Carboxylic acid
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Question # 12
Acetamides are formed by the reaction of carboxylic acids with
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Acids
Bases
Salts
NH
3
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Question # 13
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Step 1 Step 2
HCI HCN
HcN,NaCH H
2
SO
4
H
2
SO
4
K
2
Cr
2
O
7
/H
2
SO
4
KCN HCI
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Question # 14
Which formula represents the organic compound formed by the reaction of propanoic acid with methanol in the presence of concentrated sulphuric acid as a catalyst
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CH
3
CH
2
COCH
3
CH
3
CH
2
CO
2
CH
3
CH
3
CO
2
CH
2
CH
3
CH
3
CH
2
CH
2
CO
2
CH
3
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Question # 15
Carboxylic acids on complete reduction in the presence of HI and red Phosphours gives:
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esters
alcohols
alkanes
aldehydes
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Question # 16
Aliphatic carboxylic acids have carboxyl group attached to:
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Alkyl group
Aryl group
Phenyl group
Benzyl lgroup
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Question # 17
Glacial acetic acid freezes to ice like solid at (
°
C)
Choose an answer
07
17
27
37
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Question # 18
Which of the following is present in the stings of bees and wasps
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Formic acid
Citric acid
Carbolic acid
Formalin
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Question # 19
Formic Acid is obtained from Red out by:
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Distillation
Crystallization
Filtration
sublimation
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Question # 20
Those amino acids which contain two carboxylic groups are called ______ amino acids
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Acidic
Basic
Neutral
None of these
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Question # 21
Rearrangement of an oxime to an amide in the presence of strong acid is called
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Curtius rearrangement
Fries rearrangement
Beckman rearrangement
Aldol condensation
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Question # 22
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Ethanol in the presence of concentrated sulphuric acid
Potassium hydroxide
Sodium
Sodium carbonate
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Question # 23
Boiling point of acetic acid is
°C:
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116
117
118
119
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Question # 24
Monocarboxylic acids exist as dimer because of
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Dipole-dipole attraction
Hydrogen bonding
Van der Waals forces
Conhesive forces
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Question # 25
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Elimination Esterification
Elimination Isomerisation
Oxidation Exterification
Oxidation Oxidation
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Question # 26
Carboxylic acid can generally be prepared by various methods. Which of the following methods is not suitable for making carboxylic acids
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By the oxidation of primary alcohols
By the hydrolysis of nitriles
By the carbonation of Grignard, reagent
By the hydrolysis of p-amines
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Question # 27
Glacial acetic acid freezes to ice like solid it.
Choose an answer
07
17
27
37
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Question # 28
The M.P. of carboxylic acids containing even number of carbon atoms is ______ than the next
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Higher
Low
Equal
None
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Question # 29
From the following values of dissociation constants of four acids which value represents the strongest acid?
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2 x 10
-2
0.02 x 10
-1
3 x 10
-4
2 x 10
-4
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Question # 30
Pro stand for
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Valine
Alamine
Glycine
Proline
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Question # 31
Lactic acid on oxidation by alkaline potassium permanganate gives
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Tartaric acid
Pyruvic acid
Cinnamic acid
Propionic acid
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