ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

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

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

Ethyl alcohol reacts with acetyl chloride to form

• Ethyl chloride A
• Acetic acid B
• Methyleacetate C
• Ethyleacetate D

Ethyl acetate is obtained when methyl magnesium iodide reacts with

• Ethyl formate A
• Ethyl choroformate B
• Acetyl chloride C
• carbondioxide D

A carboxylic acid contains:

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

Etherification is catalyzed by

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

• Elimination Esterification A
• Elimination Isomerisation B
• Oxidation Exterification C
• Oxidation Oxidation D

Monocarboxylic acids exist as dimer because of

• Dipole-dipole attraction A
• Hydrogen bonding B
• Van der Waals forces C
• Conhesive forces D

• Acidified AgNO_3(aq) A
• Fehling's solution B
• Na C
• Na₂XO_3(aq) D

Of the following four reactions, formic acid and acetic acid differ in which respect?

• Replacement of hydrogen by sodium A
• Formation of ester with alcohol B
• Reduction of Fehling solution C
• Blue litmus reaction D

Which of the following is not fatty acid?

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

If acetyl chloride is reducing in the presence of BaSO₄and Pd, then

• CH₃CHO is formed A
• CH₃CH₂OH is formed B
• CH₃COOH is formed C
• CH₃COCH₃is formed D

Formic Acid is obtained from Red out by:

• Distillation A
• Crystallization B
• Filtration C
• sublimation D

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

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

A carboxylic acid containing Ar group in it is called:

• Aromatic carboxylic acid A
• Allphatic carboxylic acid B
• Dicarboxylic acid C
• Carboxylic acid D

Aliphatic carboxylic acids have carboxyl group attached to:

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

Optical activity is possible in

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

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

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

Amiino acids are building blocks of:

• Protein A
• Carbohydrates B
• Lipids C
• Fats D

Acidic hydrolysis of acetamide gives

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

When acetamide reacts with Br₂and caustic soda, then we get

• Acetic acid A
• Bromoacetic acid B
• Methyl amine C
• Ethylamine D

In the presence of Aluminium ethoxide, aldehydes get converted into esters. The reaction is known as

• Schmidt reaction A
• Aldol condensation B
• Beckmann's rearrangement reaction C
• Tischenko reaction D

Those amino acids which contain two carboxylic groups are called ______ amino acids

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

Acetamide is

• Highly acidic A
• Highly basic B
• Neutral C
• amphoteric D

Carboxylic acids are reduced to in presence of NaAIH₄

• Esters A
• Acetyl chloride B
• alcohol C
• Aldehydes D

Acetamides are formed by the reaction of carboxylic acids with

• Acids A
• Bases B
• Salts C
• NH₃ D

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

• 07 A
• 17 B
• 27 C
• 37 D

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

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

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