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Organic Chemistry Questions and Answers – Preparation of Carboxylic Acids | Organic Chemistry Multiple Choice Questions and Answers

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Free download in PDF Organic Chemistry Multiple Choice Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams like UPSC, NDA, SSC etc. These short solved questions or quizzes are provided by Gkseries./p>

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(1) Hydrolysis of CH3CH2NO2 with 85% H2SO4 gives which of the following compound?
[A] CH3CH2OH
[B] C2H6
[C] CH3CH=NOH
[D] CH3COOH
Answer: CH3COOH
(2) Acetic acid is obtained when which of the given reaction takes place?
[A] Methyl alcohol is oxidised with potassium permanganate
[B] Calcium acetate is distilled in the presence of calcium formate
[C] Acetaldehyde is oxidised with potassium dichromate and sulphuric acid
[D] Glycerol is heated with sulphuric acid
Answer: Acetaldehyde is oxidised with potassium dichromate and sulphuric acid

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(3) Acetic acid is manufactured by the fermentation of which of the following reaction?
[A] Ethanol
[B] Methanol
[C] Ethanal
[D] Methanal
Answer: Ethanol
(4) When benzyl alcohol is oxidised with KMnO4, the product obtained is which of the following compound?
[A] Benzaldehyde
[B] Benzoic acid
[C] CO2 and H2O
[D] Benzophenone
Answer: Benzaldehyde
(5) Which of the following gives benzoic acid on oxidation?
[A] Chlorophenol
[B] Chlorotoluene
[C] Chlorobenzene
[D] Benzyl chloride
Answer: Benzyl chloride
(6) In the below sequence of reactions, A and B are which of the following?

[A] (CH3)2C(OH)CN, (CH3)2C(OH)COOH
[B] (CH3)2C(OH)CN, (CH3)2C(OH)2
[C] (CH3)2C(OH)CN, (CH3)2CHCOOH
[D] (CH3)2C(OH)CN, (CH3)2C=O
Answer: (CH3)2C(OH)CN, (CH3)2C(OH)COOH
(7) Formic acid is obtained when which of the given reaction occurs?
[A] Calcium acetate is heated with conc. H2SO4
[B] Calcium formate is heated with calcium acetate
[C] Glycerol is heated with oxalic acid at 110℃
[D] Acetaldehyde is oxidised with K2Cr2O7 and H2SO4
Answer: Glycerol is heated with oxalic acid at 110℃
(8) o-xylene when oxidised in presence of V2O5 the product is which carboxylic acid?
[A] Benzoic acid
[B] Phenyl acetic acid
[C] Phthalic acid
[D] Acetic acid
Answer: Phthalic acid
(9) The below reaction is called as which of the following name reaction?

[A] Wurtz reactions
[B] Koch reaction
[C] Clemenson’s reduction
[D] Kolbe’s reaction
Answer: Koch reaction
(10) By aerial oxidation, which one of the following gives phthalic acid?
[A] Naphthalene
[B] Benzene
[C] Mesitylene
[D] Toluene
Answer: Naphthalene

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