ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

The M.P. of carboxylic acids containing even number of carbon atoms is ______ than the next

• Higher A
• Low B
• Equal C
• None D

The acid present in the stings of bees and wasps in

• Acetic acid A
• Formic acid B
• Formalin C
• Formaldehyde D

Acetamide is prepared by

• Heating ammonium acetate A
• Heating methyl cyanide B
• Heating ethyl acetate C
• The hydrolysis of methyl cyanide D

General formula of aromatic carboxyl acids

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

Essential amino acids are those amino acids which

• Body can not synthesize A
• Body can synthesize B
• α-amino acids C
• β-amino acids D

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

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

What is formed when oxalic acid is dehydrated by conc. H₂SO₄?

• C + CO₂ A
• CO B
• CO₂ C
• CO + CO₂ D

With amino acids ninhydrin solution gives

• Blue A
• Violet B
• Bluish violet C
• White D

Amiino acids are building blocks of:

• Protein A
• Carbohydrates B
• Lipids C
• Fats D

Ethyl alcohol reacts with acetyl chloride to form

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

• Elimination Esterification A
• Elimination Isomerisation B
• Oxidation Exterification C
• Oxidation Oxidation D

Pro stand for

• Valine A
• Alamine B
• Glycine C
• Proline D

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

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

Which of the following is not fatty acid?

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

Which of the following reagents is used to distinguish between methanoic acid and ethanoic acid?

• Amm. silver nitrate solution A
• Neutral ferric chloride B
• Sodium hydroxide solution C
• Sodium carbonate solution D

When hydrogen cyanide is added to an Aldehyde in the presence of ammonia it is called

• Strecker synthesis A
• Cory house synthesis B
• Williamson;s synthesis C
• None of these D

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

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

Which of the following is not a fatty acid

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

Acetic acid is manufactured by:

• Distillation A
• Fermentation B
• Ozonolysis C
• Esterification D

A carboxylic acid with one caboxyl group:

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

Carboxyl group has functional group in it:

• One A
• Two B
• Three C
• Four D

Of the following four reactions, formic acid and acetic acid differ in which respect?

• Replacement of hydrogen by sodium A
• Formation of ester with alcohol B
• Reduction of Fehling solution C
• Blue litmus reaction D

Boiling point of acetic acid is°C:

• 116 A
• 117 B
• 118 C
• 119 D

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

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

Vinegar made form cane sugar, now a days synthetically contains

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

Amylacetate flavour is present in:

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

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

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

What will happen if LiAIH₄is added to an ester?

• Two units of alcohol are obtained A
• One unit of alcohol and one unit of acid is obtained B
• Two units of acids are obtained C
• None of these D

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

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