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

Ketones are prepared by the oxidation of:

Question # 2

Cannizzaro's reaction in not given by

Question # 3

Cannizzaro's reaction is type of reaction:

Question # 4

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

Question # 5

Which of the following in incorrect?

Question # 6

Which compound on reaction with hydrogen cyanide produces a compound with a chiral centre

Question # 7

In carboxyl group the bond between C and oxygen is:

Question # 8

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

Question # 9

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 # 10

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

Question # 11

Which of the following is hypnotic?

Question # 12

Reduction with aluminium isopropoxide in excess of Isopropyl alcohol is called Meerwein Ponndroff-Verley reduction (MPV). What will be the final product when cyclohex-2-enone is selectively reduces in MPV reaction?

Question # 13

In formadaldehyde and KOH are heated then we get

Question # 14

Which of the following compounds does not react with NaHSO3?

Question # 15

The IUPAC name fo CH3COCH (CH3)2is

Question # 16

Cannizzzaro's reaction is not given by:

Question # 17

Which reagent will distinguish a ketone from an aldehyde

Question # 18

Acetaldehyde is used to make

Question # 19

Reduction of aldehydes with HI and P gives

Question # 20

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

Question # 21

Carboxyl compounds have functional group:

Question # 22

In which reaction, aromatic aldehyde is treated with acid anhydride in the presence of corresponding salt of the acid to give unsaturated aromatic acid?

Question # 23

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

Question # 24

Which of the following will have the highest boiling point?

Question # 25

Which of the following does not react with phenyl hydrazine?

Question # 26

At room temperature formaldehyde is

Question # 27

Wacker method involves the conversion of alkene using PdCl2into corresponding

Question # 28

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

Question # 29

Aldelydes are the oxidation product of

Question # 30

Formalin is an aqueous solution of

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ECAT Chapter 23 Important MCQ's

Sr.# Question Answer
1 The color of ppts formed by Fehling's test is
A. Brick red
B. Red
C. Yellow
D. Orange
2 In formadaldehyde and KOH are heated then we get
A. Acetylene
B. Methane
C. Methyl alcohol
D. Ethyl formate
3 Wolf-kishner reduction is used for the reduction of
A. Nitro compounds
B. Carboxylic acids
C. Carbonyl compounds
D. Olefins
4 Which of the following compounds gives a ketone with Grignard's reagent?
A. Formaldehyde
B. Ethanenitrile
C. Ethyl alcohol
D. Methyl iodide
5 Formaline Contains ______% alcohol
A. 80
B. 37
C. 8
D. 52
6 The color of ppts formed by Benedirct's test is
A. Brick red
B. Wine red
C. Yellow
D. Orange
7 Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon?
A. Aldol condensation
B. Reimer Tiemann reaction
C. Cannizaaor's reaction
D. Wolf-kishner reduction
8 Aldehydes give reactions :
A. Oxidation and reduction
B. Base-catalysed nucleophilic
C. Acid catalysed nucleophilic
D. All of these
9 Cannizzaro's reaction in not given by
A. Formaldehyde
B. Acetaldehyde
C. Benzaldyhyde
D. Trimethylacetaldehyde
10 Silver mirror test is applied for
A. Aldehydes
B. Alcohols
C. Acids
D. Esters

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