ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Vinegar is dilute solution of:

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

Fatty acids are:

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

The OH group present in acids may be replaced by CI atom on treatment with

• PCI₅ A
• SOCI₂ B
• Both of them C
• None of the above 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

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

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

Hydrolysis of alkyl nitriles gives:

• alkane A
• alkyl halide B
• alkyl nitride C
• carboxylic acids D

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

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

• Amylacetate A
• Amylbutyrate B
• Ethylbutyrate C
• Benzylacetate 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

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

Lactic acid on oxidation by alkaline potassium permanganate gives

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

Formic acid is given names from Latin word a "formic" which means:

• Red out A
• Vinegar B
• butter C
• Milk D

Glutamic acid, aspartic acid are ______ amino acid

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

• Step 1 Step 2
  HCI HCN
  A
• HcN,NaCH H₂SO₄ B
• H₂SO₄ K₂Cr₂O₇/H₂SO₄ C
• KCN HCI D

In the presence of Aluminium ethoxide, aldehydes get converted into esters. The reaction is known as

• Schmidt reaction A
• Aldol condensation B
• Beckmann's rearrangement reaction C
• Tischenko reaction D

• RCH(CH₃)CO₂H + CH₃OH A
• RCH(CH₃)CO₂H + HCO₂H B
• RCH(CH₃)OH + CO₂ C
• RCH(CH₃)OH + HCO₂H D

Toluene can be oxidized to benzoic acid by

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

• 
  A
• 
  B
• 
  C
• 
  D

Which following derivative cannot be prepared directly from acetic acid?

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

A carboxylic acid with one caboxyl group:

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

The acid present in vinegar is

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

Glacial acetic acid freezes to ice like solid it.

• 07 A
• 17 B
• 27 C
• 37 D

Zwitter ion is ______ ion an amino acid

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

Which formula represents the organic compound formed by the reaction of propanoic acid with methanol in the presence of concentrated sulphuric acid as a catalyst

• CH₃CH₂COCH₃ A
• CH₃CH₂CO₂CH₃ B
• CH₃CO₂CH₂CH₃ C
• CH₃CH₂CH₂CO₂CH₃ D

A carboxylic acid containing Ar group in it is called:

• Aromatic carboxylic acid A
• Allphatic carboxylic acid B
• Dicarboxylic acid C
• Carboxylic acid D

Partial reduction of acetic acid happens with

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

Which is not carboxylic acid with pungent smell?

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

Etherification is catalyzed by

• Acids A
• Gases B
• Salts C
• None of the these D