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ECAT Chemistry Chapter 24 Carboxylic Acid Online Test MCQs With Answers
Question # 1
Given below are some statements concerning formic acid, which of them is true?
Choose an answer
It is a weaker acid than acetic acid
It is a reducing agent
When its calcium salt is heated, it forms a ketone
It is an oxidizing agent
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Question # 2
Which reagent is used to reduce a carboxylic group to an alcohol
Choose an answer
H
2
/Ni
H
2
/Pt
NaBH
4
LiAIH
4
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Question # 3
If a large number of amino acids (hundreds to thousands) are joined by peptide bonds, the resulting product is called
Choose an answer
Dipeptide
Tripeptide
Polypeptide
None of these
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Question # 4
Vinegar is dilute solution of:
Choose an answer
Acitic acid
Formic acid
Butyric acid
Propionic acid
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Question # 5
The human body can synthesize ______ amino acids
Choose an answer
1
10
20
19
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Question # 6
Two moles of acetic acid are heated with P
2
O
5
the product formed is
Choose an answer
2 moles of ethyl alcohol
Formic anhydride
Acetic anhydride
2 moles of methyl cyanide
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Question # 7
Lower carboxylic acids are soluble in water due to
Choose an answer
Low molecular weight
Hydrogen bonding
Dissociation into ions
Easy hydrolysis
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Question # 8
Which reagent is used to reduce a carboxylic group to an alcohol?
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H2/Ni
H2/Pt
NaBH4
LiAIH4
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Question # 9
Which acid is used in the manufacture of synthetic fibre?
Choose an answer
Formic acid
Oxalic acid
Carbonic acid
Acetic acid
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Question # 10
Carboxylic acids are reduced to in presence of NaAIH
4
Choose an answer
Esters
Acetyl chloride
alcohol
Aldehydes
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Question # 11
An artificial smell of banana is produced in many articles y using esters which of the following is that
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Amyl acetate
Isoamyl valerate
Octyl acetate
Methyl butyrate
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Question # 12
Which of the following derivative cannot be prepared directly from acetic acid?
Choose an answer
Acetamide
Acetyl chloride
Ethyl acetate
Acetic acid
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Question # 13
Choose an answer
Elimination Esterification
Elimination Isomerisation
Oxidation Exterification
Oxidation Oxidation
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Question # 14
An organic acdi having molecular formula C
2
H
4
O
2
is
Choose an answer
Formic acid
Acetic acid
Oxalic acid
Propionic acid
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Question # 15
When a carboxylic acid reacts with a metal ______ gas is evolved
Choose an answer
H
2
CO
2
CI
2
None of these
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Question # 16
The acid showing salt like character in aqueous solution is
Choose an answer
Acetic acid
Benzoic acid
Formic acid
α - Aminoacetic acid
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Question # 17
Partial reduction of acetic acid happens with
Choose an answer
NH
3
LiAIH
4
P + HI
PCI
5
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Question # 18
When a carboxylic acid reacts with alcohol, it produces a new class of compounds
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Ethers
Esters
Anhydride
Amides
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Question # 19
When propanamide reacts with Br
2
and NaOH then which of the following compounds is formed?
Choose an answer
Ethyl alcohol
Propyl alcohol
Propyl amine
Ethylamine
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Question # 20
Choose an answer
Acidic amino acid
Basic amino acid
Neutral amino acid
None of these
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Question # 21
Which of the following does give violet colour with neutral ferric chloride?
Choose an answer
Acetic acid
Salicaylic acid
Formine acid
Benzoic acid
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Question # 22
From the following values of dissociation constants of four acids which value represents the strongest acid?
Choose an answer
2 x 10
-2
0.02 x 10
-1
3 x 10
-4
2 x 10
-4
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Question # 23
The organic compounds containing Ph-OH group are called:
Choose an answer
Phenol
aldehyde
Keton
Carboxylic acids
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Question # 24
Glacial acetic acid freezes to ice like solid it.
Choose an answer
07
17
27
37
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Question # 25
Carboxylic acids generally exists in cyclic
Choose an answer
Monomers
Dimers
Trimers
Tetrameter
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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
Choose an answer
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
Heating a mixture of sodium benzoate and soda lime gives
Choose an answer
Methane
Benzene
Sodium bezoate
Calcium benzoate
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Question # 28
When acetamide reacts with Br
2
and caustic soda, then we get
Choose an answer
Acetic acid
Bromoacetic acid
Methyl amine
Ethylamine
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Question # 29
Lactic acid on oxidation by alkaline potassium permanganate gives
Choose an answer
Tartaric acid
Pyruvic acid
Cinnamic acid
Propionic acid
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Question # 30
A carboxylic acid containing Ar group in it is called:
Choose an answer
Aromatic carboxylic acid
Allphatic carboxylic acid
Dicarboxylic acid
Carboxylic acid
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Question # 31
Aspirin is
Choose an answer
Acetyl salicylic acid
Phenyl salicylic acid
Salicylic acid
Benzoic acid
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