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 organic compounds exhibits positive Fehling test as well as iodoform test?

Question # 2

Dehydration of allcohol gives:

Question # 3

The colour of ppts formed by Fehling's test is

Question # 4

Which reagent could be used to distinguish between CH3CH(OH)CH2CHO and CH3COCH2CH2OH

Question # 5

Chromyl chloride and toluene react to produce

Question # 6

Cannizzzaro's reaction is not given by:

Question # 7

Iodoform test is given by:

Question # 8

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

Question # 9

Aldehydes are reduced to :

Question # 10

Aldelydes are the oxidation product of

Question # 11

Aldehydes give reactions :

Question # 12

Which compound would undergo nucleophilic addition

Question # 13

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

Question # 14

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 # 15

Wolf-kishner reduction is used for the reduction of

Question # 16

Reduction of aldehydes with HI and P gives

Question # 17

Which of the following is hypnotic?

Question # 18

Which of the following does not react with phenyl hydrazine?

Question # 19

In formadaldehyde and KOH are heated then we get

Question # 20

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

Question # 21

Which of these reactions is shown by buranone, CH3COCH2CH3

Question # 22

For which one of the following pairs of compounds can the members be distinguished by means of Tollen's test

Question # 23

A nucleophilic reagent will readily Attack

Question # 24

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

Question # 25

The IUPAC name fo CH3COCH (CH3)2is

Question # 26

Which of the following compounds does not react with NaHSO3?

Question # 27

On heating acetaldehyde with ammonical silver nitrate solution, we get

Question # 28

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

Question # 29

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

Question # 30

Cannizzaro reaction is not given by

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1
Question Image
2 Ketons are prepared by the oxidation of
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. None of these
3 Formaldehyde is used to make
A. Plastics
B. Medicine
C. Antiseptic
D. All of these
4 A common industrial solvent is a mixture of propanone; CH3COCH3, and pentyl ethanoate CH3CO2(CH2)4CH3. Which reagent would have no effect on this solvent
A. Na(s)
B. NaBH4
C. NaOH(aq)
D. 2,4-dinitrophenylhydrazine reagent
5 Aldehyde and small methyl ketones form crystalline ______ ppts with saturated sodium bisulphate solution
A. White
B. Red
C. Yellow
D. None of these
6 Which one of the following is a product of the reaction between C6H5CH2OH and CH3COCI
A. C6H5OCOCH3
B. C6H5CH2CI
C. C6H5CH2OCOCH3
D. C6H5CH2COCI
7 At room temperature formaldehyde is
A. Gas
B. Liquid
C. Solid
D. None of the above
8 Which reagent will distinguish a ketone from an aldehyde
A. Br2
B. 2, 4-dinitrophenylhydrazine
C. NaBH4
D. Tollen's reagent
9 Aldehydes are oxidizes are to give:
A. Primary alcohol
B. Sec-alcohol
C. Ter-alcohol
D. Carboxylic acid
10 Which of the following in incorrect?
A. FelCl3is used in the detection of phenols
B. Fehling solution is used in the detection of glucose
C. Tollen's reagent is used in detection of unsaturation
D. NaHSO3is used in the detection of carbonyl compounds

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