ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

When propanamide reacts with Br₂and NaOH then which of the following compounds is formed?

• Ethyl alcohol A
• Propyl alcohol B
• Propyl amine C
• Ethylamine D

Amino acids contain functional groups in it:

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

Boiling point of acetic acid is ^oC

• 116 A
• 117 B
• 118 C
• 119 D

Acetic anhydride is obtained form acetyl chloride by the reaction of

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

• 
  A
• 
  B
• 
  C
• 
  D

Weakest acid among the followings is

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

Caroxyl group has functional in it.

• one A
• two B
• three C
• four D

The reaction of acetaldehyde with HCN followed by hydrolysis gives a product which exhibits

• Metamerism A
• Tautomerism B
• Enatiomerism C
• Geometrical isomerism D

Carboxylic acids on complete reduction in the presence of HI and red Phosphours gives:

• esters A
• alcohols B
• alkanes C
• aldehydes D

When acetamide is hydrolysed by boiling with acid the product obtained is

• Ethyl amine A
• Ethyl alcohol B
• Acetic acid C
• Acetaldehyde D

Glacial Acetic acid is

• Pure acetic acid at 100°C A
• Acetic acid mixed with methanol B
• Pure acetic acid at 0°C C
• Pure acetic acid above 16.6°C D

A carboxylic acid with one caboxyl group:

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

The amino acids which human body can synthesize are called ______ amino acid

• Essential A
• Non essential B
• Acidic C
• Basic 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

The organic compounds containing Ph--OH group are called:

• Phenol A
• Aldehyde B
• Ketones C
• Carboxylic acids D

The acid showing salt like character in aqueous solution is

• Acetic acid A
• Benzoic acid B
• Formic acid C
• α - Aminoacetic acid D

Between CH₃COOH and HCOOH, HCOOH will be

• Less acidic A
• Equally acidic B
• More acidic C
• None D

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

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

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

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

Vinegar is dilute solution of:

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

Ethyl acetate reacts with CH₃MgBr to form

• Secondary alcohol A
• Tertiary alcohol B
• Primary alcohol and acid C
• Acid D

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh₄or LiAH₄?

• 1-Propanol A
• 2-Propanol B
• 2-Methyl2-Proponal C
• Ethanol D

Rearrangement of an oxime to an amide in the presence of strong acid is called

• Curtius rearrangement A
• Fries rearrangement B
• Beckman rearrangement C
• Aldol condensation D

An organic acdi having molecular formula C₂H₄O₂is

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

Amylacetate flavour is present in:

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

General formula of aromatic carboxyl acids

• R---------------OH A
• RCOOH B
• RCOR C
• ARCOOH D

Which is not carboxylic acid with pungent smell?

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

Heating a mixture of sodium benzoate and soda lime gives

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