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

Cannizzzaro's reaction is not given by:

Question # 3

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

Question # 4

Benzophenone can be converted into benzene using

Question # 5

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 # 6

Which of the following is halo form

Question # 7

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH4or LiAIH4?

Question # 8

Aniline reacts with which of these to form Schiff base?

Question # 9

Cyanohydrin of which of the following forms lactic acid

Question # 10

Aldelydes are the oxidation product of

Question # 11

Dehydration of allcohol gives:

Question # 12

In Tolten's best, the end product is ______ formed

Question # 13

The addition of HCN to carbonyl compounds is an example of

Question # 14

Which of the following compounds does not react with NaHSO3?

Question # 15

Chromic acid used to oxidize

Question # 16

Ketones are prepared by the oxidation of

Question # 17

Chromyl chloride and toluene react to produce

Question # 18

Ethanal may be converted into a three-carbon acid in a two-step process.
Which compound is the intermediate

Question # 19

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

Question # 20

Acetal is produced by reacting alcohol in the presence of dry HCl with

Question # 21

Which of the following will have the highest boiling point?

Question # 22

An organic compound has the following properties ; It gives a positive tri-iodomethane test; it gives a yellow ppt, with 2, 4-DNP regent; it does not react with Tollen's reagent . Which compound would give these results

Question # 23

Which of the following compounds will react with reagent ?

Question # 24

Which of the following does not turn Schiff's reagent to pink?

Question # 25

Which of the following does not react with phenyl hydrazine?

Question # 26

Formaldehyde is used to make

Question # 27

Aldehydes is distinguished from ketones by using

Question # 28

Aldol condensation is actually

Question # 29

Cannizzaro's reaction in not given by

Question # 30

Aldehydes give reactions :

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 Ketones are prepared by the oxidation of
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. None of these
2 Formalin is:
A. 10% solution of formaldehyde in water
B. 20% solution of formaldehyde in water
C. 40% solution of formaldehyde in water
D. 60% solution of formaldehyde in water
3 Which of the following gives iodoform on heating with a solution of I2containing Na2CO3?
A. Ethyl alcohol
B. Acetone
C. Ethyl alcohol as well as acetone
D. Methyl alcohol
4 Which one of the following reagents will distinguish between C6H5CHO and C6H5COCH3
A. Aqueous bromine
B. Phosphorus pentachloride
C. 2, 4 DNPH
D. Tollen's reagent
5 Which of the following compounds will react with reagent ?
A. CH3 CO H
B. CH3 CO CH3
C. CH3 COOH
D. CH3 CO CH2CH3
6 Give IUPAC name fo Acetone
A. Ethanal
B. Propanone
C. Butanone
D. Propanal
7 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
8 Ketons are prepared by the oxidation of
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. None of these
9 Reaction of Grignard's reagent eith aldehyds other formaldehyde gives: Reaction of Grignard's reagent with formaldehyde gives:
A. Pri-alcohol
B. Sec-alcohol
C. Ter-alcohol
D. Carboxylic
10 Aldehydes are produce in atmosphere by
A. Oxidation of secondary alcohols
B. Reduction of alkenes
C. Reaction of oxygen atoms with hydrocarbons
D. Reaction of oxygen atoms with ozone

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