ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Which acid is used in the manufacture of synthetic fibre?

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

Which of the following order is incorrect w.r.t property indicated?

• Formic acid > Acetic acid > Propionic acid (ACID STRENGTH) A
• Cyclohexanol < Phenol < Benzoic acid ( ACID STRENGTH) B
• Benzamide < Aniline < Cyclohexylamine ( ACID STRENGTH) C
• FCH₂COOH > CICH₂COOH > BrCH₂COOH (ACID STRENGTH) D

A carboxylic acid contains:

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

• It decolourises aqueous bromine rapidly A
• It is insoluble in water B
• It reduces Fehling's reagent C
• Two molecules react with each other in the presence of a strong acid D

Hydrolysis of alkyl nitriles is done to get carboxylic acids in the presence of

• Mineral acids A
• Mineral alkalies B
• Organics acids C
• Minerals acids & alkalies D

A carboxylic acid with one caboxyl group:

• Monocarboxylic acid A
• Dicarboxylic acid B
• Tricarboxylic acid C
• Polycarboxylic acid D

Amino acids contain functional groups in it:

• --CO-- A
• --OH B
• ---NH₂ C
• All of these D

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

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

The human body can synthesize ______ amino acids

• 1 A
• 10 B
• 20 C
• 19 D

Which of the following derivative cannot be prepared directly from acetic acid?

• Acetamide A
• Acetyl chloride B
• Ethyl acetate C
• Acetic acid D

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

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

Active metals react with carboxylic acid releasing gas:

• CO A
• CO₂ B
• H₂O as steam C
• H₂ D

Which of the following derivative can not be prepared directly from acetic acid

• Acetamide A
• Acetyl chloride B
• Acetic anhydride C
• Ethyl acetate D

Acetic acid is also named.

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

Which of the following is not fatty acid?

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

The general formula of amino acids is

• 
  A
• 
  B
• 
  C
• 
  D

Acetic anhydride is obtained form acetyl chloride by the reaction of

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

Amylacetate flavour is present in:

• Banana A
• Apple B
• Jasmine C
• Orange 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

Glutamic acid, aspartic acid are ______ amino acid

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

Lactic acid on oxidation by alkaline potassium permanganate gives

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

Boiling point of acetic acid is ^oC

• 116 A
• 117 B
• 118 C
• 119 D

Vinegar is dilute solution of:

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

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

The human body can synthesize ______ amino acids

• 1 A
• 10 B
• 20 C
• 19 D

The Zwitter ion is also called

• International salt A
• Internal salt B
• No salt C
• None of these D

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

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

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

Monocarboxylic acids exist as dimer because of

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