ECAT Pre Engineering Chemistry Chapter 23 MCQ Test With Answer

MCQ's Test For ECAT Chemistry Chapter 23 Aldehydes and Ketones

Try The MCQ's Test For ECAT Chemistry Chapter 23 Aldehydes and Ketones

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ECAT Chemistry Chapter 23 Aldehydes and Ketones

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Question # 1

Hydrogenation of bezoyl chloride in presence of Pd on BaSO4gives

Question # 2

Acetaldehyde is used to make

Question # 3

Which of the following organic compounds exhibits positive Fehling test as well as iodoform test?

Question # 4

Acetone is prepared by

Question # 5

Cannizzaro reaction is not given by

Question # 6

Cannizzaro's reaction in not given by

Question # 7

Distillation of calcium salts of acetic acid and formic acids gives acetaldehyde. What compound would be obtained if only calcium salt of acetic acid is distilled

Question # 8

A food chemist wants to create the odour of pineapples for a product. An ester with this odour has the formula C3H7COOC2H5.Which pair of reagents would produce this ester

Question # 9

When vapours of isopropyl alcohol are passed over heated copper, the major product obtained is

Question # 10

Which of the following react with NaOH to produce an acid and an alcohol?

Question # 11

Cannizzaro's reaction is type of reaction:

Question # 12

Aldehydes is distinguished from ketones by using

Question # 13

C2H5CHO and (CH3)2CO can be distunguished by testing with

Question # 14

Benzophenone can be converted into benzene using

Question # 15

Which is used for the reduction of aldehydes and ketones

Question # 16

Common names of aldehydes are given by corresponding:

Question # 17

What is formed when propanone is refluxed with an anhydrous solution of NaBH4

Question # 18

Which of the following reagent will react with both aldehyde and ketones?

Question # 19

Acetone reacts with HCN to form a cyanohydrin. It is an example of

Question # 20

Which is mild oxidizing agent ?

Question # 21

Compounds X, Y and Z, all react with PCI5to release hydrogen chloride, but only one of them reacts eith 2,4-dinitrophenylhydrazine reagent. Which one of the following combinations could be X, Y and Z

Question # 22

An organic compound 'A' has the molecular formula C3H6O, it undergoes iodoform test. When saturated with HCl it gives 'B' of molecular formula C9H14O. A and B, respectively are

Question # 23

Aldehydes and ketones are carbonyl compounds. Which of them react both with NaBH4and with Tollen's reagent

Question # 24

Which of the following will have the highest boiling point?

Question # 25

On adding sodium nitroprusside ketones give

Question # 26

Reductive ozonolysis of benzene produces

Question # 27

Chromyl chloride and toluene react to produce

Question # 28

Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon?

Question # 29

Iodoform test is given by:

Question # 30

Ketones are prepared by the oxidation of

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 Ketones are reduced to
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. All of these
2 Which of the following reagents is used to distinguish acetone and acetophenone
A. NaHSO3
B. Grinard reagent
C. Na2SO4
D. NH4Cl
3 Which of the following reagent will react with both aldehyde and ketones?
A. Grinard's reagent
B. Tollen's reagent
C. Fehling's reagent
D. Benedict's reagent
4 Ketones are prepared by the oxidation of
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. None of these
5 Chromic acid used to oxidize
A. Aldehyde
B. Ketone
C. Both a and b
D. None of these
6 Tollen's reagent is
A. Ammonical cuprous chloride
B. Ammonical cuprous oxide
C. Ammonical silver bromide
D. Ammonical silver nitrate
7 Acetaldehyde is used to make
A. Rubbber
B. Antiseptics
C. Phenolic resin
D. All of these
8 Aldelydes are the oxidation product of
A. P-alcohols
B. s-alcohols
C. ter-alcohols
D. carboxylic acids
9 Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon?
A. Aldol condensation
B. Reimer Tiemann reaction
C. Cannizaaor's reaction
D. Wolf-kishner reduction
10 Acetone is oxidized with
A. Tollen's reagent
B. Fehling solution
C. Acidic dichromate solution
D. Benedicts solution

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