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

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

Question # 2

Acetone is prepared by

Question # 3

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

Question # 4

Which compound would undergo nucleophilic addition

Question # 5

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

Question # 6

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

Question # 7

Ketones are prepared by the oxidation of:

Question # 8

The color of ppts formed by Fehling's test is

Question # 9

The carbon atom of a carbonyl group is

Question # 10

Wolf-kishner reduction is used for the reduction of

Question # 11

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

Question # 12

At room temperature formaldehyde is

Question # 13

Which of the following is halo form

Question # 14

Ketons are prepared by the oxidation of

Question # 15

Which of the following will have the highest boiling point?

Question # 16

Cannizzaro's reaction in not given by

Question # 17

The homologous series of aldehydes and ketones have general formula:

Question # 18

Clemensen's reduction of ketones is carried out in

Question # 19

Aledehydes ketones can be prepared form alcohols by their:

Question # 20

Aldehydes which do not haveα-hydrogen undergo

Question # 21

Dehydration of allcohol gives:

Question # 22

Calcium acetate when dry distilled gives

Question # 23

Reduction of aldehydes with HI and P gives

Question # 24

Which reaction is of condensation or addition elimination reaction?

Question # 25

The catalytic prmoter used for the industrial preparation of acetaldehyde is

Question # 26

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

Question # 27

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBH4or LiAIH4?

Question # 28

Hydroxyl amine is a derivative of::

Question # 29

A compound possessingα-hydrogen atom, in the presence of dilute alkali formsβ-hydroxy aldehyde. This product on heating with dilute acid forms an unsaturated crotonaldehyde. The compound is

Question # 30

Which of the following is hypnotic?

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 The IUPAC name fo CH3COCH (CH3)2is
A. 4-Methylisopropyl ketone
B. 3-Methyl-2 butanone
C. Isopropylmethyl ketone
D. 2 - Methyl- 2 butanone
2 Hydroxyl amine is a derivative of::
A. Alcohol
B. Aldehyde
C. Ammonia
D. Ketone
3 Formaldehyde is used to make
A. Plastics
B. Medicine
C. Antiseptic
D. All of these
4 Silver mirror test is applied for
A. Aldehydes
B. Alcohols
C. Acids
D. Esters
5 Which of the following gives iodoform on heating with a solution of I2containing Na2CO3?
A. Ethyl alcohol
B. Acetone
C. Ethyl alcohol as well as acetone
D. Methyl alcohol
6 Give IUPAC name fo Acetone
A. Ethanal
B. Propanone
C. Butanone
D. Propanal
7 In which reaction, aromatic aldehyde is treated with acid anhydride in the presence of corresponding salt of the acid to give unsaturated aromatic acid?
A. Friedel-Crafts reaction
B. Perkin's reaction
C. Wurtz reaction
D. None of these
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
A. Na(s)
B. NaBH4
C. NaOH(aq)
D. 2,4-dinitrophenylhydrazine reagent
9 C2H5CHO and (CH3)2CO can be distunguished by testing with
A. Phenyl hydrazine
B. Hydroxylamine
C. Fehling solution
D. Sodium bisulphate
10 In formadaldehyde and KOH are heated then we get
A. Acetylene
B. Methane
C. Methyl alcohol
D. Ethyl formate

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