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ECAT Chemistry Chapter 24 Carboxylic Acid Online Test MCQs With Answers
Question # 1
Vinegar made form cane sugar, now a days synthetically contains
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Citric acid
Lactic acid
Acetic acid
Palmitic acid
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Question # 2
What is the structure of the ester formed from propanoic acid and ethanol
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Question # 3
The acids obtained by the hydrolysis of fats and oils are called
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Active compound
Fatty acids
Functional group
None
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Question # 4
General formula of aromatic carboxyl acids
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R---------------OH
RCOOH
RCOR
ARCOOH
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Question # 5
Lactic acid on heating with dil. H
2
SO
4
gives
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Acetic acid
Propionic acid
Acrylic acid
Formic acid
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Question # 6
Carboxylic acids generally exists in cyclic
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Monomers
Dimers
Trimers
Tetrameter
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Question # 7
Acetic acid is also named.
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Methanoic acid
Ethanoic acid
Propanic acid
Butanoic acid
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Question # 8
Ethyl acetate reacts with CH
3
MgBr to form
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Secondary alcohol
Tertiary alcohol
Primary alcohol and acid
Acid
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Question # 9
Pro stand for
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Valine
Alamine
Glycine
Proline
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Question # 10
Which of the following does give violet colour with neutral ferric chloride?
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Acetic acid
Salicaylic acid
Formine acid
Benzoic acid
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Question # 11
In preparation medhod of carboxylic acids from alkyl halides always carboxylic acid formed which have carbon atoms:
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One less than in R----X
One more than in R---X
Equal to R---X
Double to R----X
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Question # 12
The solution of which acid is use for seasoning of food?
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Formic acid
Acetic acid
Benzoin acid
Butanoic acid
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Question # 13
Acetamides are formed by the reaction of carboxylic acids with
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Acids
Bases
Salts
NH
3
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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
Which of the following order is incorrect w.r.t property indicated?
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Formic acid > Acetic acid > Propionic acid (ACID STRENGTH)
Cyclohexanol < Phenol < Benzoic acid ( ACID STRENGTH)
Benzamide < Aniline < Cyclohexylamine ( ACID STRENGTH)
FCH
2
COOH > CICH
2
COOH > BrCH
2
COOH (ACID STRENGTH)
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Question # 16
When acetic acid and ethanol react together an ester is formed which is called
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Ethyl ester
Ethanoic acid
Ethanoic acid
Ethyl acetate
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Question # 17
Common names of carboxylic acids are given by then:
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Source
Person discovered
place
habit
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Question # 18
General formula of aliphatic carboxylic acids:
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R---OH
R----COH
R----CO---R
RCOOH
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Question # 19
Which of the following derivative cannot be prepared directly from acetic acid?
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Acetamide
Acetyl chloride
Ethyl acetate
Acetic acid
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Question # 20
Fatty acids are:
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Allphatic monocarboxylic acids
Dicaroxylic acids
Tricarboxylic acids
Tetracarboxylic acids
Poly carboxylic acids
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Question # 21
A carboxylic acid with one caboxyl group:
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Monocarboxylic acid
Dicarboxylic acid
Tricarboxylic acid
Polycarboxylic acid
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Question # 22
Reaction of acids with alcohols is also known as
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Esterification
Saponification
Alkalization
None
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Question # 23
The amino acids which human body can synthesize are called ______ amino acid
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Essential
Non essential
Acidic
Basic
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Question # 24
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 # 25
Acetic acid is manufactured by:
Choose an answer
Distillation
Fermentation
Ozonolysis
Esterification
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Question # 26
Easter are pleasant smelling compounds. Which ester posseses odour like pineapple
Choose an answer
Amylacetate
Amylbutyrate
Ethylbutyrate
Benzylacetate
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Question # 27
What is formed when oxalic acid is dehydrated by conc. H
2
SO
4
?
Choose an answer
C + CO
2
CO
CO
2
CO + CO
2
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Question # 28
Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. the easter is
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Ethyl methonoate
Methyl ethanoate
Propylamine
Ethylamine
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Question # 29
When a carboxylic acid reacts with a metal ______ gas is evolved
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H
2
CO
2
CI
2
None of these
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Question # 30
Which reagent is used to reduce a carboxylic group to an alcohol
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H
2
/Ni
H
2
/Pt
NaBH
4
LiAIH
4
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Question # 31
Toluene can be oxidized to benzoic acid by
Choose an answer
KMnO
4
(alk)
K
2
Cr
2
O
7
(acidic)
Both
None
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