ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Toluene can be oxidized to benzoic acid by

• KMnO₄(alk) A
• K₂Cr₂O₇(acidic) B
• Both C
• None 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

Glacial acetic acid freezes to ice like solid it.

• 07 A
• 17 B
• 27 C
• 37 D

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

• Reduction A
• Neutralization B
• oxidation C
• hydrolysis 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

The human body can synthesize ______ amino acids

• 1 A
• 10 B
• 20 C
• 19 D

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

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

Acetic acid is manufactured by the fermentation of

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

Weakest acid among the followings is

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

Amides on treatment with Br₂and KOH are converted into amines, the reaction is known as

• Hoffmann's bromamide reaction A
• Hoffmann's methylation B
• Gabriel phthalimide reaction C
• H.V.Z reaction D

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

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

Vinegar made form cane sugar, now a days synthetically contains

• Citric acid A
• Lactic acid B
• Acetic acid C
• Palmitic acid D

Formic acid is obtained when

• Calcium acetate is heated with conc.H₂SO₄ A
• Calcium formate is heated with calcium acetate B
• Glycerol is heated with oxalic acid C
• Acetaldehyde is oxidized with K₂Cr₂O₇and H₂SO₄ D

A carboxylic acid contains:

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

Vinegar is dilute solution of:

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

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

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

The acid showing salt like character in aqueous solution is

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

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

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

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

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

Which following derivative cannot be prepared directly from acetic acid?

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

Hydrolytic reaction of fats by causic soda is known as

• Acetylation A
• Carboxylation B
• Esterification C
• Saponification D

Ethyl alcohol reacts with acetyl chloride to form

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

Compounds containing cyanide group (.........C=H) are called:

• Nitrides A
• Nitrites B
• Nitriles C
• Cyanides D

Aromatic carboxylic acids have carboxyl group attached to group :

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

Partial reduction of acetic acid happens with

• NH₃ A
• LiAIH₄ B
• P + HI C
• PCI₅ D

Caroxyl group has functional in it.

• one A
• two B
• three C
• four D

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

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

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