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ECAT Chemistry Chapter 24 Carboxylic Acid Online Test MCQs With Answers
Question # 1
Formic acid is obtained when
Choose an answer
Calcium acetate is heated with conc.H
2
SO
4
Calcium formate is heated with calcium acetate
Glycerol is heated with oxalic acid
Acetaldehyde is oxidized with K
2
Cr
2
O
7
and H
2
SO
4
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Question # 2
Which of the following is not a fatty acid?
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Propanoic acid
Acetic acid
Phthalic acid
Butanoic acid
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Question # 3
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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 # 4
Common names of carboxylic acids are given by then:
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Source
Person discovered
place
habit
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Question # 5
Which is not carboxylic acid with pungent smell?
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Formic acid
Acetic acid
Ethanoic acid
Butyric acid
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Question # 6
Butyric acid was named from butyrum means:
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Red out
Vinegar
Butter
Milk
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Question # 7
Which are used as essences(flowers)?
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aldehydes
Ketones
alcohols
esters
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Question # 8
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 # 9
The Zwitter ion is also called
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International salt
Internal salt
No salt
None of these
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Question # 10
The human body can synthesize ______ amino acids
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1
10
20
19
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Question # 11
The acid present in the stings of bees and wasps in
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Acetic acid
Formic acid
Formalin
Formaldehyde
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Question # 12
The common name of propanoic acid is
Choose an answer
Acetic acid
Formic acid
Propionic acid
Butyric acid
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Question # 13
Partial reduction of acetic acid happens with
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NH
3
LiAIH
4
P + HI
PCI
5
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Question # 14
A carboxylic acid with one caboxyl group:
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Monocarboxylic acid
Dicarboxylic acid
Tricarboxylic acid
Polycarboxylic acid
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Question # 15
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di(4-bormophenyl) method
Methanol
Propan-1-ol
Propan-2-ol
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Question # 16
Hydrolysis of trichloromethane with aqueous KOH gives
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Potassium formate
Acetylene
Chloral
Methanol
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Question # 17
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 # 18
Essential amino acids are those amino acids which
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Body can not synthesize
Body can synthesize
α
-amino acids
β
-amino acids
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Question # 19
Ethyl acetate is obtained when methyl magnesium iodide reacts with
Choose an answer
Ethyl formate
Ethyl choroformate
Acetyl chloride
carbondioxide
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Question # 20
Acyl halide is formed by reacting PCl
5
with
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Alcohol
Ester
Amide
Both carboxylic acids as well as esters
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Question # 21
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 # 22
A peptide having molecular mass upto 10,000 is called a
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Vitamin
Protein
Polypeptide
Dipetide
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Question # 23
Lower carboxylic acids are soluble in water due to
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Low molecular weight
Hydrogen bonding
Dissociation into ions
Easy hydrolysis
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Question # 24
With amino acids ninhydrin solution gives
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Blue
Violet
Bluish violet
White
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Question # 25
Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh
4
or LiAH
4
?
Choose an answer
1-Propanol
2-Propanol
2-Methyl2-Proponal
Ethanol
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