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

The homologous series of aldehydes and ketones have general formula:

Question # 2

At room temperature formaldehyde is

Question # 3

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

Question # 4

Which of the following compounds will not give iodoform test on treatment with I2/ NaOH?

Question # 5

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 # 6

Hydrogenation of bezoyl chloride in presence of Pd on BaSO4gives

Question # 7

Which reaction is of condensation or addition elimination reaction?

Question # 8

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

Question # 9

Condensation of aldeydes withα-hydrogen gives:

Question # 10

In formadaldehyde and KOH are heated then we get

Question # 11

Tollen's reagent is

Question # 12

Formalin is an aqueous solution of

Question # 13

Hydroxyl amine is a derivative of::

Question # 14

Ketones are prepared by the oxidation of:

Question # 15

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 # 16

Which of the following in incorrect?

Question # 17

Clemensen's reduction of ketones is carried out in

Question # 18

Which is used for the reduction of aldehydes and ketones

Question # 19

The color of ppts formed by Fehling's test is

Question # 20

On heating acetaldehyde with ammonical silver nitrate solution, we get

Question # 21

Which compound would undergo nucleophilic addition

Question # 22

Silver mirror test is applied for

Question # 23

Which of the following is hypnotic?

Question # 24

Which one of the following statement is wrong regarding differences between aldehydes and ketones

Question # 25

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

Question # 26

Aldehydes are reduced to :

Question # 27

Aledehydes ketones can be prepared form alcohols by their:

Question # 28

Common names of aldehydes are given by corresponding:

Question # 29

Reduction of aldehydes with HI and P gives

Question # 30

Reductive ozonolysis of benzene produces

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 Reaction of Grignard's reagent with formaldehyde gives:
A. pri-alcohol
B. sec-alcohol
C. ter-alcohol
D. carboxylic
2 Aniline reacts with which of these to form Schiff base?
A. Acetic acid
B. Bezaldehyde
C. Acetone
D. NH3
3 The base used in Cannizzaro's reaction is
A. NaOH
B. KOH
C. CHI3
D. All of these
4 Give IUPAC name fo Acetone
A. Ethanal
B. Propanone
C. Butanone
D. Propanal
5 The IUPAC name fo CH3COCH (CH3)2is
A. 4-Methylisopropyl ketone
B. 3-Methyl-2 butanone
C. Isopropylmethyl ketone
D. 2 - Methyl- 2 butanone
6 Isopropyl alcohol on oxidation forms
A. Acetone
B. Ether
C. Ethylene
D. Acetaldehyde
7 Which is used for the reduction of aldehydes and ketones
A. NaBH4
B. Pt/Pd
C. Ni
D. All of these
8 Aldehydes are oxidizes are to give:
A. Primary alcohol
B. Sec-alcohol
C. Ter-alcohol
D. Carboxylic acid
9 Aromatic aldehydes undergo disproportionation in presence of sodium or potassium hydroxide to give corresponding alcohol and acid. The reaction is known as
A. Wurtz reaction
B. Cannizzaro reaction
C. Friedel Craft reaction
D. Claisen reaction
10 Which of the following does not react with phenyl hydrazine?
A. Ethanol
B. Ethanal
C. Acetone
D. Acetophenone

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