ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

Glacial acetic acid freezes to ice like solid at (°C)

• 07 A
• 17 B
• 27 C
• 37 D

A compound X has all of the following properties: It is a liquid at room temperature and atmospheric pressure; It does not mix completely with water; It does not decolorise acidified potassium manganate

What could X be

• Ethane A
• Ethanoic acid B
• Ethanol C
• Ethyl ethanoate D

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

Lysine is ______ amino acid

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

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

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

When acetamide reacts with Br₂and caustic soda, then we get

• Acetic acid A
• Bromoacetic acid B
• Methyl amine C
• Ethylamine D

Boiling point of acetic acid is ^oC

• 116 A
• 117 B
• 118 C
• 119 D

Acetamides are formed by the reaction of carboxylic acids with

• Acids A
• Bases B
• Salts C
• NH₃ 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

Acetamide is

• Highly acidic A
• Highly basic B
• Neutral C
• amphoteric D

Acetic acid is also named.

• Methanoic acid A
• Ethanoic acid B
• Propanic acid C
• Butanoic acid 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

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

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

With amino acids ninhydrin solution gives

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

Aromatic carboxylic acids have carboxyl group attached to group :

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

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

What is the structure of the ester formed from propanoic acid and ethanol

• 
  A
• 
  B
• 
  C
• 
  D

Aspirin is

• Acetyl salicylic acid A
• Phenyl salicylic acid B
• Salicylic acid C
• Benzoic acid D

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

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

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

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

Which of the following statements about acetic, anhydride is not correct

• It is immiscible with water but is hydrolysed to give acetic acid A
• It is prepared by the action of actyl chloride on the sodium salt of acetic acid B
• it reacts with ammonia to give acetamide C
• it is a strong acid D

The order of decreasing ease of reaction with ammonia is

• Anhydrides, esters, ethers A
• Anhydrides, ethers, esters B
• Ethers, anhydrides, esters C
• Esters, ethers, anhydrides D

Butyric acid was named from butyrum means:

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

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

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

Primary alcohols and aldehydes are oxidized to corresponding:

• alkanes A
• alkenes B
• Alkynes C
• Carboxylic Acid D

• Proton donar A
• Dehydrating agent B
• Catalyst C
• Electrophile D

Which of the following is the strongest acid?

• CF₃COOH A
• CBr₃COOH B
• CH₃COOH C
• CCl₃COOH D

Which of the following does give violet colour with neutral ferric chloride?

• Acetic acid A
• Salicaylic acid B
• Formine acid C
• Benzoic acid 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