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 does not turn Schiff's reagent to pink?

Question # 2

Which reaction yields Bakelite?

Question # 3

Aldehydes are oxidizes are to give:

Question # 4

In carboxyl group the bond between C and oxygen is:

Question # 5

Which of the following compounds gives a ketone with Grignard's reagent?

Question # 6

Aldehydes are reduced to :

Question # 7

Aledehydes ketones can be prepared form alcohols by their:

Question # 8

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

Question # 9

Which one of the following reagents will distinguish between C6H5CHO and C6H5COCH3

Question # 10

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

Question # 11

Cannizzaro reaction is not given by

Question # 12

Cannizzaro's reaction in not given by

Question # 13

Acetone is oxidized with

Question # 14

Which reaction is of condensation or addition elimination reaction?

Question # 15

Cyanohydrin of which of the following forms lactic acid

Question # 16

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

Question # 17

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

Question # 18

The IUPAC name fo CH3COCH (CH3)2is

Question # 19

Self condensation of acetaldehyde in the presence of dilute alkalies gives

Question # 20

Which of the following will have the highest boiling point

Question # 21

Ketons are prepared by the oxidation of

Question # 22

Cannizzzaro's reaction is not given by:

Question # 23

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

Question # 24

The product of the reaction between propanone and HCN is hydrolysed under acidic conditions. What is the formula of the final product

Question # 25

Hydroxyl amine is a derivative of::

Question # 26

Which is used for the reduction of aldehydes and ketones

Question # 27

Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives:

Question # 28

Which of the following compounds will react with reagent ?

Question # 29

Formaline Contains ______% alcohol

Question # 30

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

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 Which of the following compounds will not give iodoform test on treatment with I2/ NaOH?
A. Acetaldehyde
B. Acetone
C. Butane
D. 3-pentanone
2 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
A. CH3CHO
B. CH3CH2OH
C. CH3CH2COCH3
D. CH3CH2CH2CHO
3 Which of the following does not turn Schiff's reagent to pink?
A. Formaldehyde
B. Bezaldehyde
C. Aceton
D. Methyl chloride
4 Cannizzaro's reaction is type of reaction:
A. Self oxidation-reduction reaction
B. Disproportion reaction
C. Addition
D. A and B
5 Reaction of Grignard's reagent with formaldehyde gives:
A. pri-alcohol
B. sec-alcohol
C. ter-alcohol
D. carboxylic
6 Which of the following compounds gives a ketone with Grignard's reagent?
A. Formaldehyde
B. Ethanenitrile
C. Ethyl alcohol
D. Methyl iodide
7 Give IUPAC name fo Acetone
A. Ethanal
B. Propanone
C. Butanone
D. Propanal
8 Aldehydes which do not haveα-hydrogen undergo
A. Aldol combination
B. Cannizzaro's reaction
C. Substitution
D. Elimination
9 Acetal is produced by reacting alcohol in the presence of dry HCl with
A. Acetaldehyde
B. Ketone
C. Ether
D. Carboxylic acid
10 Aldehydes can be distinguished from ketones by using
A. Schiff's reagent
B. Conc. H2SO4
C. Anhy. ZnCl2
D. Resorcinol

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