ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Boiling point of acetic acid is ^oC

• 116 A
• 117 B
• 118 C
• 119 D

A carboxylic acid contains:

• A hydroxyl group A
• A carboxyl group B
• A hydroxyle & carboxyl group C
• A carboxyl &aldehyde group D

Carboxylic acids react with acids releasing gas from it:

• H2O as steam A
• CO B
• CO2 C
• O2 D

Which reagent is used to reduce a carboxylic group to an alcohol?

• H2/Ni A
• H2/Pt B
• NaBH4 C
• LiAIH4 D

Acetic Acid is obtained from:

• Red out A
• Vinegar B
• Butter C
• Milk D

Vinegar is dilute solution of:

• Acitic acid A
• Formic acid B
• Butyric acid C
• Propionic acid D

Caroxyl group has functional in it.

• one A
• two B
• three C
• four D

Which following derivative cannot be prepared directly from acetic acid?

• Acetamide A
• Acetyl chloride B
• Acetic anhdride C
• Ethyl acetate D

• 
  A
• 
  B
• 
  C
• 
  D

Tryosine was isolated from

• Butter A
• Cheese B
• Oils C
• Fats D

Aliphatic carboxylic acids have carboxyl group attached to:

• Alkyl group A
• Aryl group B
• Phenyl group C
• Benzyl lgroup D

The acid present in vinegar is

• CH₃COOH A
• HCI B
• H₂SO₄ C
• HCOOH D

• 
  A
• 
  B
• 
  C
• 
  D

Amides on treatment with Br₂and KOH are converted into amines, the reaction is known as

• Hoffmann's bromamide reaction A
• Hoffmann's methylation B
• Gabriel phthalimide reaction C
• H.V.Z reaction D

Which of the following is not a fatty acid

• Propanoic acid A
• Acetic acid B
• Phthalic acid C
• Butanoic acid D

Glacial Acetic acid is

• Pure acetic acid at 100°C A
• Acetic acid mixed with methanol B
• Pure acetic acid at 0°C C
• Pure acetic acid above 16.6°C D

Given below are some statements concerning formic acid, which of them is true?

• It is a weaker acid than acetic acid A
• It is a reducing agent B
• When its calcium salt is heated, it forms a ketone C
• It is an oxidizing agent D

Weakest acid among the followings is

• Acetic acid A
• Phenol B
• Water C
• Acetylene D

Partial reduction of acetic acid happens with

• NH₃ A
• LiAIH₄ B
• P + HI C
• PCI₅ D

The solution of which acid is used for seosoning of food ?

• Formic acid A
• Acetic acid B
• Benzoic acid C
• Butanoic acid D

Glacial acetic acid freezes to ice like solid at (°C)

• 07 A
• 17 B
• 27 C
• 37 D

From the following values of dissociation constants of four acids which value represents the strongest acid?

• 2 x 10^-2 A
• 0.02 x 10^-1 B
• 3 x 10^-4 C
• 2 x 10^-4 D

Amino acids are buildng blocks of:

• protein A
• Carbohydrates B
• Lipids C
• fats D

Hydrolytic reaction of fats by causic soda is known as

• Acetylation A
• Carboxylation B
• Esterification C
• Saponification D

When acetic acid and ethanol react together an ester is formed which is called

• Ethyl ester A
• Ethanoic acid B
• Ethanoic acid C
• Ethyl acetate D

Which one of the following has been hydroxyl and carboxylic acid groups

• Phenols A
• Picric acid B
• Phthalic acid C
• Salicylic acid D

An organic acdi having molecular formula C₂H₄O₂is

• Formic acid A
• Acetic acid B
• Oxalic acid C
• Propionic acid D

Which of the following is the strongest acid?

• CF₃COOH A
• CBr₃COOH B
• CH₃COOH C
• CCl₃COOH D

Etherification is catalyzed by

• Acids A
• Gases B
• Salts C
• None of the these D

In public urinals, we observe some nascent smell. This smell is due to

• Hydrolysis of urea of urine by urease of atmosphere into NH₃and CO₂ A
• Formation of sulphonic acid by urea of urine B
• Reaction of CO₂of atmosphere with urea monoitrate in urine C
• Hydrogen present in air reacts with nitrogen forming NH₃ D