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

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Questions
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?

Organic Chemistry

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?

Organic Chemistry

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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