Carboxylic Acids MCQs [Organic Chemistry]

MCQs-based questions and answers on Carboxylic Acids in organic chemistry.

A reaction in which a carboxylic acid loses CO2 is known as _______ .

  1. Carbonylation
  2. Carboxylation
  3. Amination
  4. Decarboxylation

Question’s Answer: Decarboxylation

When carboxylate salts are heated with soda-lime, ______ are formed.

  1. Alkynes
  2. Cycloalkanes
  3. Alkanes
  4. Alkenes

Question’s Answer: Alkanes

Organic compounds having carbon-carbon double bond undergo cleavage at the point of unsaturation when subjected to oxidation with alkaline KMnO4 yield_____.

  1. Aldehydes
  2. Ketones
  3. Carboxylic acids
  4. Alcohols

Question’s Answer: Carboxylic acids

Hydrolysis of nitriles with aqueous acid or alkali yields with a chain one carbon atom longer than the original chain

  1. Carboxylic acids
  2. Ketones
  3. Alcohols
  4. Aldehydes

Question’s Answer: Carboxylic acids

Carbonation of Grignard reagents results in the formation of  _________ .

  1. Aldehydes
  2. Ketones
  3. Carboxylic acids
  4. Alcohols

Question’s Answer: Carboxylic acids

Which acids is the strongest acid?

  1. CH3COOH
  2. HCOOH
  3. C2H5COOH
  4. C3H7COOH

Question’s Answer: HCOOH

Which is neutral amino acid?

  1. Glycine
  2. Lysine
  3. Histidine
  4. Aspartic acid

Question’s Answer: Glycine

The amino acids which a body can synthesize are known as ___________ .

  1. Essential
  2. Basic
  3. Acidic
  4. Non-essential

Question’s Answer: Non-essential

What is the relative order of esterification of acids?

  3. RCH₂CO₂H < R3CCO₂H < R₂CHCO₂H
  4. R₂CCO₂H > R₂CH₂CO₂H> R₂CHCO,H

Question’s Answer: RCH₂CO₂H> R₂CHCO₂H> R3CCO₂H

Which acids is the strongest acid?

  1. BrCH2COOH

Question’s Answer: FCH2COOH

Which electron- withdrawing group increase the acidity of the carboxylic acids?

  1. -CI
  2. -CN
  3. -OH
  4. All

Question’s Answer: All

Carboxylic acids for acid halides by reacting with which of the following?

  1. PCl3
  2. SOCI2
  3. PCI5
  4. All A, B, and C

Question’s Answer: All A, B, and C

Carboxylic acids react with alcohols to produce which of the following?

  1. Aldehyde
  2. Ester
  3. Phenol
  4. Ketone

Question’s Answer: Ester

The solution of which acid is helpful and used for seasoning of food

  1. Acetic acid
  2. Formic acid
  3. Butanoic acid
  4. Benzoic acid

Question’s Answer: Acetic acid

The alkaline hydrolysis of an ester to form sodium salt of carboxylic acid and alcohol is known as ___________ .

  1. Hydrolysis
  2. Carboxylstion
  3. Saponification
  4. Dehydration

Question’s Answer: Saponification

Amino acids are classified into what kind of types?

  1. Neutral
  2. Basic
  3. Acidic
  4. All types

Question’s Answer: All types

Oxidation of primary alcohol and aldehyde yields which of the following?

  1. Ketones
  2. Carboxylic acids
  3. Phenols
  4. Oxime

Question’s Answer: Carboxylic acids

Which compounds on hydrolysis yields acetic acid?

  2. CH3C≡N
  3. CH3CO2MgX
  4. All these

Question’s Answer: All these

When the alkoxide group of one ester is to replace by another alkoxide group by refluxing ester with excess of alcohol in the presence of mineral acid, the process is known as ___________ .

  1. Hydrolysis
  2. Carboxylation
  3. Trans esterification
  4. Dehydration

Question’s Answer: Trans esterification

Decarboxylation of the silver salt of carboxylic acid in the presence of bromine to form alkyl bromide is known as ___________ .

  1. Hunsdiecker reaction
  2. Wittig reaction
  3. Kolbe reaction
  4. Birch reduction

Question’s Answer: Hunsdiecker reaction

Which reagents is helpful and used to convert carboxylic acid to alcohol?

  1. H2/Ni
  2. NaBH4
  3. LiAlH4
  4. Pt

Question’s Answer: LiAlH4

When propanoic acid treated with aqueous sodium bicarbonate, carbon dioxide is liberated. The carbon of the carbon dioxide comes from which of the following group?

  1. Methyl group
  2. Carboxylic group
  3. Bicarbonate
  4. Methylene group

Question’s Answer: Bicarbonate

________ undergoes decarboxylation on heating?

  1. Malonic acid
  2. Phthalic acid
  3. Succinic acid
  4. All

Question’s Answer: Malonic acid

Reverse of esterification is known as ___.

  1. Dehydration
  2. Trans esterification
  3. Carboxylation
  4. Hydrolysis

Question’s Answer: Hydrolysis

Caboxylic acids react with alcohols in the presence of mineral acids to forms esters. This process is known as ___________ .

  1. Hydrolysis
  2. Esterification
  3. Carboxylation
  4. Trans esterification

Question’s Answer: Esterification

Which electron-donating group decrease the acidity of the carboxylic acids?

  1. -CI
  2. -CN
  3. -CHi
  4. –OH

Question’s Answer: -CHi

Which acids is strong?

  1. o-nitrobenzoic acid
  2. m-nitrobenzoic acid
  3. Benzoic acid
  4. p-nitrobenzoic acid

Question’s Answer: o-nitrobenzoic acid

Which acids is strong?

  1. Benzoic acid
  2. m-chlorobenzoic acid
  3. p-chlorobenzoic acid
  4. o-chlorobenzoic acid

Question’s Answer: o-chlorobenzoic acid

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