ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Optical activity is possible in

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

Acetic acid is manufactured by the fermentation of

• Ethanol A
• Methanol B
• Ethanal C
• Methanal D

Ethyl alcohol reacts with acetyl chloride to form

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

Heating a mixture of sodium benzoate and soda lime gives

• Methane A
• Benzene B
• Sodium bezoate C
• Calcium benzoate D

Glutamic acid, aspartic acid are ______ amino acid

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

The common name of propanoic acid is

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

If a large number of amino acids (hundreds to thousands) are joined by peptide bonds, the resulting product is called

• Dipeptide A
• Tripeptide B
• Polypeptide C
• None of these D

Two moles of acetic acid are heated with P₂O₅the product formed is

• 2 moles of ethyl alcohol A
• Formic anhydride B
• Acetic anhydride C
• 2 moles of methyl cyanide D

Which of the following is the strongest acid?

• CF₃COOH A
• CBr₃COOH B
• CH₃COOH C
• CCl₃COOH 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

The acids obtained by the hydrolysis of fats and oils are called

• Active compound A
• Fatty acids B
• Functional group C
• None D

Acidic hydrolysis of acetamide gives

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

Which acid is used in the manufacture of synthetic fibre?

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

In preparation medhod of carboxylic acids from alkyl halides always carboxylic acid formed which have carbon atoms:

• One less than in R----X A
• One more than in R---X B
• Equal to R---X C
• Double to R----X 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

From the following values of dissociation constants of four acids which value represents the strongest acid?

• 2 x 10^-2 A
• 0.02 x 10^-1 B
• 3 x 10^-4 C
• 2 x 10^-4 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

Carboxylic acids on complete reduction in the presence of Hi and red phosphorus gives:

• Esters A
• Alcohols B
• Alkanes C
• Aldehydes D

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

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

Carboxyl group has functional group in it:

• One A
• Two B
• Three C
• Four D

When a carboxylic acid reacts with a metal ______ gas is evolved

• H₂ A
• CO₂ B
• CI₂ C
• None of these D

Aliphatic carboxylic acids have carboxyl group attached to:

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

Which are used as essences (flowers)?

• Aldehydes A
• Ketones B
• Alcohols C
• Esters D

Common names of carboxylic acids are given by then:

• Source A
• Person discovered B
• place C
• habit 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

Hydrolysis of an ester gives a carboxylic acid which on Kolbe's electrolysis yields ethane. the easter is

• Ethyl methonoate A
• Methyl ethanoate B
• Propylamine C
• Ethylamine D

Amino acids contain functional groups in it:

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

Lysine is ______ amino acid

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

A compound containing carboxyl group in them are called:

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