ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

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

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

• Proton donar A
• Dehydrating agent B
• Catalyst C
• Electrophile D

Palmitic acid & steanic acid ae obtained from process of fats & oils:

• Reduction A
• Neutralization B
• oxidation C
• hydrolysis D

Rosenmund's reduction of an acyl chloride gives

• An aldehydes A
• An alcohol B
• An ester C
• A hydrocarbon D

Primary alcohols and aldehydes are oxidized to corresponding:

• alkanes A
• alkenes B
• Alkynes C
• Carboxylic Acid D

What is formed when oxalic acid is dehydrated by conc. H₂SO₄?

• C + CO₂ A
• CO B
• CO₂ C
• CO + CO₂ D

General formula of aromatic carboxyl acids

• R---------------OH A
• RCOOH B
• RCOR C
• ARCOOH D

• Ethanol in the presence of concentrated sulphuric acid A
• Potassium hydroxide B
• Sodium C
• Sodium carbonate D

The organic compounds containing Ph--OH group are called:

• Phenol A
• Aldehyde B
• Ketones C
• Carboxylic acids D

Carboxyl group has functional group in it:

• One A
• Two B
• Three C
• Four D

Acetic acid is miscible in:

• Water A
• Alcohol B
• Either C
• All of these D

Vinegar is dilute solution of:

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

Vinegar made form cane sugar, now a days synthetically contains

• Citric acid A
• Lactic acid B
• Acetic acid C
• Palmitic acid D

With amino acids ninhydrin solution gives

• Blue A
• Violet B
• Bluish violet C
• White D

Esters have peculiar smell, which of the following is used as an essence of orange

• Isoamyl acetate A
• Iosamyl valerate B
• Octyl acetate C
• Methyl butyrate D

Which of the following is not a fatty acid

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

Acidic hydrolysis of acetamide gives

• Acetaldehyde A
• Acetic acid B
• Methyl amine C
• Formic acid D

Partial reduction of acetic acid happens with

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

The acid present in vinegar is

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

HCOOH reacts with conc. H₂SO₄to produce

• CO A
• CO₂ B
• NO C
• NO₂ D

When hydrogen cyanide is added to an Aldehyde in the presence of ammonia it is called

• Strecker synthesis A
• Cory house synthesis B
• Williamson;s synthesis C
• None of these D

A carboxylic acid contains:

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

• di(4-bormophenyl) method A
• Methanol B
• Propan-1-ol C
• Propan-2-ol D

Boiling point of acetic acid is°C:

• 116 A
• 117 B
• 118 C
• 119 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

Sulphonation of benzoic acid produces mainly

• o-Sulphobenzoic acid A
• m-sulohobenzoic acid B
• p-Sulphobenzoic acid C
• o-and p-Sulphobenzoic acid D

The OH group present in acids may be replaced by CI atom on treatment with

• PCI₅ A
• SOCI₂ B
• Both of them C
• None of the above D

The human body can synthesize ______ amino acids

• 1 A
• 10 B
• 20 C
• 19 D

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

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

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