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

Aldehydes and ketones are carbonyl compounds. Which of them react both with NaBH4and with Tollen's reagent

Question # 2

Which of the following will have the highest boiling point

Question # 3

In formadaldehyde and KOH are heated then we get

Question # 4

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

Question # 5

Which is mild oxidizing agent ?

Question # 6

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 # 7

Ethanal may be converted into a three-carbon acid in a two-step process.
Which compound is the intermediate

Question # 8

The addition of HCN to carbonyl compounds is an example of

Question # 9

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 # 10

Chromic acid used to oxidize

Question # 11

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

Question # 12

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

Question # 13

Aldelydes are the oxidation product of

Question # 14

The IUPAC name fo CH3COCH (CH3)2is

Question # 15

Hydrogenation of bezoyl chloride in presence of Pd on BaSO4gives

Question # 16

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

Question # 17

Formalin is an aqueous solution of

Question # 18

Ketons are prepared by the oxidation of

Question # 19

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

Question # 20

On adding sodium nitroprusside ketones give

Question # 21

Chromyl chloride and toluene react to produce

Question # 22

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

Question # 23

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

Question # 24

Silver mirror test is applied for

Question # 25

Cannizzaro's reaction in not given by

Question # 26

Carboxyl compounds have functional group:

Question # 27

From which of the following tertiary butyl alcohol is obtained by the action of methyl magnesium iodide?

Question # 28

Isopropyl alcohol on oxidation forms

Question # 29

Aldehydes is distinguished from ketones by using

Question # 30

Which is not true about acetophenone?

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 On heating acetaldehyde with ammonical silver nitrate solution, we get
A. CH3OH
B. Silver acetate
C. HCHO
D. Silver mirror
2 Iodoform test is given by:
A. Formaldehyde and Higher ketones
B. Formaldehyde
C. Acetaldehyde and methyl ketones
D. Acetaldehyde
3 The color of ppts formed by Benedirct's test is
A. Brick red
B. Wine red
C. Yellow
D. Orange
4 Which is mild oxidizing agent ?
A. Tollen's reagent
B. KMnO4 / H2SO4
C. K2Cr2O7 / H2SO4
D. HNO3
5 Which of the following react with NaOH to produce an acid and an alcohol?
A. NCHO
B. CH3COOH
C. CH3CH2COOH
D. C6H5COOH
6 Reaction of Grignard's reagent eith aldehyds other formaldehyde gives: Reaction of Grignard's reagent with formaldehyde gives:
A. Pri-alcohol
B. Sec-alcohol
C. Ter-alcohol
D. Carboxylic
7 Ketones are reduced to
A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. All of these
8 Which of the following compounds will react with reagent ?
A. CH3 CO H
B. CH3 CO CH3
C. CH3 COOH
D. CH3 CO CH2CH3
9 The color of ppts formed by Fehling's test is
A. Brick red
B. Red
C. Yellow
D. Orange
10 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?
A. Cyclohexanol
B. Cyclohex-2-enol
C. Cyclohexanone
D. Benzene

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