ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Ethyl acetate is obtained when methyl magnesium iodide reacts with

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

Carboxyl group has functional group in it:

• One A
• Two B
• Three C
• Four D

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

• Reduction A
• Neutralization B
• oxidation C
• hydrolysis 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

What will happen if LiAIH₄is added to an ester?

• Two units of alcohol are obtained A
• One unit of alcohol and one unit of acid is obtained B
• Two units of acids are obtained C
• None of these D

Amino acids are buildng blocks of:

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

Pro stand for

• Valine A
• Alamine B
• Glycine C
• Proline D

Which acid is used in the manufacture of synthetic fibre?

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

Acidic hydrolysis of acetamide gives

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

Saponification of ethyl benzoate with caustic soda

• Benzyl alcohol,ethanoic acid A
• Sodium benzoate, ethanol B
• Benzoic acid, sodium ethoxide C
• Phenol, ethanoic acid D

Weakest acid among the followings is

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

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

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

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

Formic acid is given names from Latin word a "formic" which means:

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

Tryosine was isolated from

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

A compound X has all of the following properties: It is a liquid at room temperature and atmospheric pressure; It does not mix completely with water; It does not decolorise acidified potassium manganate

What could X be

• Ethane A
• Ethanoic acid B
• Ethanol C
• Ethyl ethanoate D

Which acid is used in the manufacture of synthetic fibre

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

Aromatic carboxylic acids have carboxyl group attached to group :

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

Carboxylic acid can generally be prepared by various methods. Which of the following methods is not suitable for making carboxylic acids

• By the oxidation of primary alcohols A
• By the hydrolysis of nitriles B
• By the carbonation of Grignard, reagent C
• By the hydrolysis of p-amines D

Etherification is catalyzed by

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

Acetic acid is manufactured by:

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

Acetic acids react with PCI5 giving:

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

Aspirin is

• Acetyl salicylic acid A
• Phenyl salicylic acid B
• Salicylic acid C
• Benzoic acid D

Which of the following is not a fatty acid

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

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

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

Monocarboxylic acids exist as dimer because of

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

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

• 07 A
• 17 B
• 27 C
• 37 D