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

Which of the following reagents is used to distinguish acetone and acetophenone

Question # 2

Cannizzaro's reaction in not given by

Question # 3

Which alcohol may be oxidised to a product which react with 2,4-dinitorphenylhydrazine reagent but not with Fehling's reagent

Question # 4

Which isomer of C5H11OH gives, one dehydration, the greastest number of different alkenes

Question # 5

Chromyl chloride and toluene react to produce

Question # 6

Cyanohydrin of which of the following forms lactic acid

Question # 7

On adding sodium nitroprusside ketones give

Question # 8

Reaction of Grignard's reagent eith aldehyds other formaldehyde gives: Reaction of Grignard's reagent with formaldehyde gives:

Question # 9

Cannizzaro reaction is not given by

Question # 10

Which of the following gives iodoform on heating with a solution of I2containing Na2CO3?

Question # 11

Acetone is oxidized with

Question # 12

Which compound would undergo nucleophilic addition

Question # 13

The base used in Cannizzaro's reaction is

Question # 14

Condensation of aldeydes withα-hydrogen gives:

Question # 15

A nucleophilic reagent will readily Attack

Question # 16

Which of the following compounds will react with Tollen's reagent

Question # 17

Benzophenone can be converted into benzene using

Question # 18

Acetaldehyde is used to make

Question # 19

Formalin is an aqueous solution of

Question # 20

Propyne on hydrolysis in presence of H2SO4and HgSO4gives

Question # 21

Aniline reacts with which of these to form Schiff base?

Question # 22

Which of the following is hypnotic?

Question # 23

Chromic acid used to oxidize

Question # 24

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 # 25

Give IUPAC name fo Acetone

Question # 26

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

Question # 27

Aldehyde and small methyl ketones form crystalline ______ ppts with saturated sodium bisulphate solution

Question # 28

Which one of the following is a product of the reaction between C6H5CH2OH and CH3COCI

Question # 29

Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as

Question # 30

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

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 Cannizzaro's reaction is type of reaction:
A. Self oxidation-reduction reaction
B. Disproportion reaction
C. Addition
D. A and B
2 Chromyl chloride and toluene react to produce
A. p-chlorotoluene
B. Benzaldehyde
C. Benzyl chloride
D. Bezoic acid
3 Chromic acid used to oxidize
A. Aldehyde
B. Ketone
C. Both a and b
D. None of these
4 Cannizzaro reaction is not given by
A. Trimethyl acetaldehyde
B. Acetaldehyde
C. Benzaldehyde
D. Formaldehyde
5 Give IUPAC name fo Acetone
A. Ethanal
B. Propanone
C. Butanone
D. Propanal
6 Carboxyl compounds have functional group:
A. R-C-X
B. R-CH=O
C. RCOR
D. All
7 Acetone is prepared by
A. Oxidation of n-propyl alcohol
B. Oxidation of acetaldehyde
C. Pyrolysis of calcium acetate
D. Pyrolysis of calcium acetate as well as acetic acid
8 Aldol condensation is actually
A. Electrophilic addition of carbonation
B. Electrophilic addition of carbonium ion
C. Nucleophilic addition of carbonation
D. Nuclephilic addition of carbonium ion
9 On heating acetaldehyde with ammonical silver nitrate solution, we get
A. CH3OH
B. Silver acetate
C. HCHO
D. Silver mirror
10 Aniline reacts with which of these to form Schiff base?
A. Acetic acid
B. Bezaldehyde
C. Acetone
D. NH3

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