ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Glutamic acid, aspartic acid are ______ amino acid

• Acidic A
• Basic B
• Neutral C
• None of these D

Acetamide is prepared by

• Heating ammonium acetate A
• Heating methyl cyanide B
• Heating ethyl acetate C
• The hydrolysis of methyl cyanide D

With the increase in carbon no. the solubility of carboxylic acids

• Increases A
• Decreases B
• Remains same C
• None of these D

Acetic acids react with PCI5 giving:

• Acetamide A
• Acetyl chloride B
• Alcohol C
• Ether D

General formula of aliphatic carboxylic acids:

• R---OH A
• R----COH B
• R----CO---R C
• RCOOH D

If a large number of amino acids (hundreds to thousands) are joined by peptide bonds, the resulting product is called

• Dipeptide A
• Tripeptide B
• Polypeptide C
• None of these D

A compound containing carboxyl group in them are called:

• Ketone A
• Ether B
• Carboxylic acids C
• Polycarboxylic acid D

Acetic acid is manufactured by:

• Distillation A
• Fermentation B
• Ozonolysis C
• Esterification D

The solution of which acid is use for seasoning of food?

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

Formic acid is obtained when

• Calcium acetate is heated with conc.H₂SO₄ A
• Calcium formate is heated with calcium acetate B
• Glycerol is heated with oxalic acid C
• Acetaldehyde is oxidized with K₂Cr₂O₇and H₂SO₄ D

Which are used as essences (flowers)?

• Aldehydes A
• Ketones B
• Alcohols C
• Esters D

When acetamide is hydrolysed by boiling with acid the product obtained is

• Ethyl amine A
• Ethyl alcohol B
• Acetic acid C
• Acetaldehyde D

Acetic anhydride is obtained form acetyl chloride by the reaction of

• P₂O₅ A
• H₂SO₄ B
• CH₃COONa C
• CH₃COCH₃ D

Acyl halide is formed by reacting PCl₅with

• Alcohol A
• Ester B
• Amide C
• Both carboxylic acids as well as esters D

Acetamide is prepared by:

• Heating ammonium acetate A
• Heating methyl cyanide B
• Heating ethyl acetate C
• The hydrolysis of methyl cyanide D

Which of the following compounds on boiling with KMnO₄(alk) and subsequent acidification will not give benzoic acid?

• Benzyl alcohol A
• Acetophenone B
• Anisole C
• Toluene D

Hydrolysis of alkyl nitriles gives:

• alkane A
• alkyl halide B
• alkyl nitride C
• carboxylic acids D

Which of the following reagents is used to distinguish between methanoic acid and ethanoic acid?

• Amm. silver nitrate solution A
• Neutral ferric chloride B
• Sodium hydroxide solution C
• Sodium carbonate solution D

Which acid is used in the manufacture of synthetic fibre?

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

The amino acids which human body can synthesize are called ______ amino acid

• Essential A
• Non essential B
• Acidic C
• Basic D

Which of the following does give violet colour with neutral ferric chloride?

• Acetic acid A
• Salicaylic acid B
• Formine acid C
• Benzoic acid D

The human body can synthesize ______ amino acids

• 1 A
• 10 B
• 20 C
• 19 D

The human body can synthesize ______ amino acids

• 1 A
• 10 B
• 20 C
• 19 D

• Alkyl A
• Alkyl nitrile B
• Cyanogens C
• Amine D

• RCH(CH₃)CO₂H + CH₃OH A
• RCH(CH₃)CO₂H + HCO₂H B
• RCH(CH₃)OH + CO₂ C
• RCH(CH₃)OH + HCO₂H D

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

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

The common name of propanoic acid is

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

Amylacetate flavour is present in:

• Banana A
• Apple B
• Jasmine C
• Orange D

Acetic Acid is obtained from:

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

When a carboxylic acid reacts with a metal ______ gas is evolved

• H₂ A
• CO₂ B
• CI₂ C
• None of these D