ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Amino acids are buildng blocks of:

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

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

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

A peptide having molecular mass upto 10,000 is called a

• Vitamin A
• Protein B
• Polypeptide C
• Dipetide D

Lactic acid on heating with dil. H₂SO₄gives

• Acetic acid A
• Propionic acid B
• Acrylic acid 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

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

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

Acetic acid is miscible in:

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

Carboxylic acids having carboxyl group one is called:

• Mono carboxylic acid A
• Di-carboboxylic acid B
• Tri carboxilic acid C
• Tetra carboxylic acid D

Which is not carboxylic acid with pungent smell?

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

Vinegar is dilute solution of:

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

Ethyl acetate is obtained when methyl magnesium iodide reacts with

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

Ethyl alcohol reacts with acetyl chloride to form

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

Lactic acid on oxidation by alkaline potassium permanganate gives

• Tartaric acid A
• Pyruvic acid B
• Cinnamic acid C
• Propionic acid D

Which of the following is present in the stings of bees and wasps

• Formic acid A
• Citric acid B
• Carbolic acid C
• Formalin D

Fatty acids are:

• Allphatic monocarboxylic acids A
• Dicaroxylic acids B
• Tricarboxylic acids C
• Tetracarboxylic acids D
• Poly carboxylic acids E

The acid present in the stings of bees and wasps in

• Acetic acid A
• Formic acid B
• Formalin C
• Formaldehyde D

The acid present in vinegar is

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

Easter are pleasant smelling compounds. Which ester posseses odour like pineapple

• Amylacetate A
• Amylbutyrate B
• Ethylbutyrate C
• Benzylacetate D

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

Acetic acid is also named.

• Methanoic acid A
• Ethanoic acid B
• Propanic acid C
• Butanoic acid D

A compound containing carboxyl group in them are called:

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

The common name of propanoic acid is

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

With amino acids ninhydrin solution gives

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

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

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

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

Zwitter ion is ______ ion an amino acid

• Polar A
• Monopular B
• Dipolar C
• Non polar D

An artificial smell of banana is produced in many articles y using esters which of the following is that

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

Amylacetate flavour is present in:

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

A colourless liquid, at room temperature reacts with soda lime to form sodium salt of carboxylic acid and ammonia gas. The liquids is

• Propanamide A
• Propanoic acid B
• Formamide C
• Methyl Ethanoate D