ECAT Pre Engineering Chemistry Chapter 24 MCQ Test With Answer

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

• Amylacetate A
• Amylbutyrate B
• Ethylbutyrate C
• Benzylacetate 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 organic compounds containing Ph--OH group are called:

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

Carboxylic acids are reduced to in presence of NaAIH₄

• Esters A
• Acetyl chloride B
• alcohol C
• Aldehydes 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 of the following does give violet colour with neutral ferric chloride?

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

Reaction of acids with alcohols is also known as

• Esterification A
• Saponification B
• Alkalization C
• None D

Primary alcohols and aldehydes are oxidized to corresponding:

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

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

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

The organic compounds containing Ph-OH group are called:

• Phenol A
• aldehyde B
• Keton C
• Carboxylic acids D

Vinegar made form cane sugar, now a days synthetically contains

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

Esters have peculiar smell, which of the following is used as an essence of orange

• Isoamyl acetate A
• Iosamyl valerate B
• Octyl acetate C
• Methyl butyrate D

• Ethanol in the presence of concentrated sulphuric acid A
• Potassium hydroxide B
• Sodium C
• Sodium carbonate 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

Caroxyl group has functional in it.

• one A
• two B
• three C
• four D

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

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

When acetamide reacts with Br₂and caustic soda, then we get

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

Which acid is used in the manufacture of synthetic fibre

• Formic acid A
• Phthalic acid B
• Carbonic acid C
• Acetic acid D

Acetamide and NaOBr/OH^-produce

• Ethanamine A
• Methanamide B
• CH₃CN C
• NH₃ D

Lactic acid on heating with dil. H₂SO₄gives

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

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

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

Lysine is ______ amino acid

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

Formic Acid is obtained from Red out by:

• Distillation A
• Crystallization B
• Filtration C
• sublimation D

Lower carboxylic acids are soluble in water due to

• Low molecular weight A
• Hydrogen bonding B
• Dissociation into ions C
• Easy hydrolysis 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

• 
  A
• 
  B
• 
  C
• 
  D

The general formula of amino acids is

• 
  A
• 
  B
• 
  C
• 
  D

Pro stand for

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