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NEET Chemistry MCQ
Carboxylic Acids And Their Derivatives Mcq Neet Chemistry
Quiz 6
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Q.1
An organic acid having molecular formula C2H4O2 is ... [ Punjab CET 1989]
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a) Acetic acid
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b) Propionic acid
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c) Formic acid
0%
d) Oxalic acid
Explanation
Answer : (a)
Q.2
The compound formed as a result of oxidation of ethyl benzene by KMnO4 is ... ..[ IIT 2007]
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a) Benzyl alcohol
0%
b) Benzophenone
0%
c) Acetophenone
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d) Benzoic acid
Explanation
Answer : (d)
Q.3
Assertion : p- hydroxy benzoic acid has a lower boiling point than o-hydroxy benoix acid Reason : o-hydroxy benzoic acid has intramolecular hydrogen bonding
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a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
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c) Assertion is true but, Reason is false
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d) Assertion is false but, Reason is true
Explanation
Answer : (d)
Q.4
Among the following the strongest acid is ... ... [ Haryana CEET 2000 ]
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a) CH3COOH
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b) CH2ClCH2COOH
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c) CH2ClCOOH
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d) CH3CH2COOH
Explanation
CH2ClCOOH has less +I effect of CH3 and more -I effect of chlorine Answer : (c)
Q.5
Formic acid is obtained when
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a) Acetaldehyde is oxidised with K2Cr2O7 and H2SO4
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b) Glycerol is heated with oxalic acid
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c) Calcium formate is heated with calcium acetate
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d) Calcium acetate is heated with conc. H2SO4
Explanation
Glycerol on heating with oxalic acid at 110°C yields formic acid Answer : (b)
Q.6
Which reactin is suitable for preparing α-chloroacetic acid?
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a) Hell-Volhard Zelinsky reaction
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b) Stephen's reaction
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c) Perkin's reaction
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d) None of these
Explanation
Answer : (a)
Q.7
α-chloropropionic acid on treatment with KOH followed by acidifion gives
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a) CH3-CH(OH)-COOH
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b) CH2=CH -COOH
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c) HO - CH2 - CH2 - COOH
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d) none of the above
Explanation
it is elimination reaction Answer : (b)
Q.8
Glacial Acetic acid is
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a) Pure actic acid at 0°C
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b) Acetic acid mixed with methanol
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c) Pure acetic acid at 100°C
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d) Pure aetic acid around 16.6°C
Explanation
Answer : (d)
Q.9
on Q160) Predict X in the reaction
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a)
0%
b)
0%
c)
0%
d)
Explanation
Answer : (a)
Q.10
ion : Sulphanilic acid is insoluble in water and organic solvents Reason : Sulphanilic acid is typical dipolar salt
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a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
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c) Assertion is true but, Reason is false
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d) Assertion is false but, Reason is true
Explanation
Answer : (a)
Q.11
Two moles of acetic acid are heated with P2OThe product formed is
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a) 2 moles of methul cyanide
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b) acetic anhydride
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c) 2 mole of ethyl alcohol
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d) formic acid
Explanation
P2O5 acts as dehydrating agent Answer : (b)
Q.12
Chlorination of toluene in presence of light and heat followed by treatment with aqueous NaOH gives
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a) p- Cresol
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b) o- Cresol
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c) 1, 3, 5-Trihydroxytoluene
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d) Benzoic acid
Explanation
Answer : (d)
Q.13
The refluxing of (CH3)2NCOCH3 with acid gives ... .[ kurukshetra CEET 1996]
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a) (CH3)2NH + CH3COOH
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b) 2CH3NH2 + CH3COOH
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c) 2CH3OH + CH3CONH2
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d) CH3COONa + C2H5OH
Explanation
Answer : (a)
Q.14
on Q165) The IUPAC name for ...[ Punjab CET 1989]
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a) 1-Chloro-3-methylpentanone
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b) 1-Chloro-3-ethyl butanone
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c) 3-Methylbutanoyl chloride
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d) 3-Methylpentanoyl chloride
Explanation
Answer : (d)
Q.15
On subjecting mesityl oxide to the iodoform reaction, one of the products is the sodium salt of an organic acid. Which acid is obtained?
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a) (CH3)2C = CH - CO - COOH
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b) (CH3)2C = CH - CH2COOH
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c) (CH3)2C = CH - CO - COOH
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d) (CH3)2C = CH - COOH
Explanation
Answer : (d)
Q.16
The acid showing salt like character in aqueous solutions is
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a) Benzoic acid
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b) Formic acid
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c) α-Aminoacetic acid
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d) Acetic acid
Explanation
α-Aminoacetic acid exists as zwitter ion in its aquous solution. i.e. it has both positive and negative charge and behaves as an internal salt Answer : (c)
Q.17
Acetamide and NaOBr/OH- produce ... [ DCM 2000 ]
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a) NH3
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b) Ethanamine
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c) Methanamine
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d) CH3CN
Explanation
Hofmann bromamide reaction Answer : (c)
Q.18
on Q169) A is
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a)
0%
b)
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c) Both are correct
0%
d) None is correct
Explanation
Answer : (a)
Q.19
Lower carboxylic acids are soluble in water due to .. [ MPCET 1999[
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a) Low molecular weight
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b) Hydrogen bonding
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c) Dissociation into ions
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d) Easy hydrolysis
Explanation
Lower carboxylic acids produce hydrogen bond with molecule and thus soluble Answer : (b)
Q.20
ion :CH3COCH2COOC2H5 will give iodoform test Reason : It contains CH3-CO- unit linked to carbon atom
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a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
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c) Assertion is true but, Reason is false
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d) Assertion is false but, Reason is true
Explanation
Answer : (d)
Q.21
When propionic acid is treated with aqueous sodium bicarbonate CO2 is liberated. The 'C' of CO2 comes from
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a) Methyl group
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b) Carboxylic acid group
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c) Methylene group
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d) Bicarbonate
Explanation
Answer : (d)
Q.22
Which of the following substances cannot be used for the replacement of -OH group in organic compounds by Cl?
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a) SOCl2
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b) PCl5
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c) PCl3
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d) S2Cl2
Explanation
Answer : (d)
Q.23
Hydrolysis of an ester gives a carboxylic acid which on Kole's electrolysis yields ethane. the ester is
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a) Methyl ethanoate
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b) Ethyl amine
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c) Ethyl methonoate
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d) Propyl amine
Explanation
Answer : (a)
Q.24
Aspirin is
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a) Benzoic acid
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b) Phenyl salicylic acid
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c) Acetyl salicylic acid
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d) Benzoic acid
Explanation
Answer : (c)
Q.25
on Q176) Identify Z
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a) CH3CH2CONH2
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b) CH3COOH
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c) CH3CN
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d) CH3CH2CONH2
Explanation
X is : CH3CONH2 Y is : CH3C ≡ N Z is : CH3COOH Answer : (b)
Q.26
Sulphonation of benzoic acid produces mainly
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a) o- and p- Sulphobenzoic acid
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b) o- Sulphobenzoic acid
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c) m-Sulphobenzoic acid
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d) p- Sulphobenoic acid
Explanation
Answer : (c)
Q.27
on Q178) Identify D
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a) Amide
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b) Primary amine
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c) Phenyl isocyanate
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d) Chain lengthed hydrocarbon
Explanation
Answer : (c)
Q.28
Hydrolysis of an ester gives acid A and alcohol B. The acid reduces Fehling's solution. Oxidation of alcohol B gives acid A. The ester is
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a) ethyl formate
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b) methyl acetate
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c) methyl formate
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d) ethyl acetate
Explanation
HCOOH is reducing agent Answer : (c)
Q.29
Hydrated oxalic acid contains
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a) 2 water molecules
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b) 1 water molecule
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c) 3 water molecules
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d) 4 water molecules
Explanation
Hydrated oxalic acid is H2C2O4.2H2O Answer : (a)
Q.30
Acetyl bromide reacts with excess of CH3MgI followed by treatment with a saturated solution of NH4Cl gives ...[ AIEEE 2004]
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a) acetyl iodide
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b) acetamide
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c) 2-methyl propan-2-ol
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d) acetone
Explanation
Answer : (c)
0 h : 0 m : 1 s
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