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 react with NaOH to produce an acid and an alcohol?

Question # 2

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

Question # 3

Acetal is produced by reacting alcohol in the presence of dry HCl with

Question # 4

Propyne on hydrolysis in presence of H2SO4and HgSO4gives

Question # 5

Wacker method involves the conversion of alkene using PdCl2into corresponding

Question # 6

Aldehydes are produce in atmosphere by

Question # 7

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

Question # 8

Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon?

Question # 9

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

Question # 10

Which of the following in incorrect?

Question # 11

Benzophenone can be converted into benzene using

Question # 12

Dehydration of allcohol gives:

Question # 13

Compounds X, Y and Z, all react with PCI5to release hydrogen chloride, but only one of them reacts eith 2,4-dinitrophenylhydrazine reagent. Which one of the following combinations could be X, Y and Z

Question # 14

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 # 15

At room temperature formaldehyde is

Question # 16

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

Question # 17

Aldol condensation is actually

Question # 18

The colour of ppts formed by Fehling's test is

Question # 19

Reduction of aldehydes with HI and P gives

Question # 20

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

Question # 21

In aldol condensation reaction, a double bond is formed between ______ and ______ carbon atoms

Question # 22

Carboxyl compounds have functional group:

Question # 23

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

Question # 24

Condensation of aldeydes withα-hydrogen gives:

Question # 25

The IUPAC name fo CH3COCH (CH3)2is

Question # 26

Formalin is an aqueous solution of

Question # 27

Aldehydes is distinguished from ketones by using

Question # 28

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

Question # 29

Tollen's reagent is

Question # 30

Ketones are reduced to

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ECAT Chemistry Chapter 23 Important MCQ's

Sr.# Question Answer
1 Which of the following compounds will react with Tollen's reagent
2 Formalin is:
A. 10% solution of formaldehyde in water
B. 20% solution of formaldehyde in water
C. 40% solution of formaldehyde in water
D. 60% solution of formaldehyde in water
3 Which isomer of C5H11OH gives, one dehydration, the greastest number of different alkenes
4 Which of the following is halo form
A. CHBr3
B. CHCI3
C. CHI3
D. All of these
5 Cannizzaro reaction is not given by
A. Trimethyl acetaldehyde
B. Acetaldehyde
C. Benzaldehyde
D. Formaldehyde
6 Calcium acetate when dry distilled gives
A. Formaldehyde
B. Acetaldehyde
C. Acetone
D. Acetic anhydride
7 Which of the following reagents is used to distinguish acetone and acetophenone
A. NaHSO3
B. Grinard reagent
C. Na2SO4
D. NH4Cl
8 Which of the following in incorrect?
A. FelCl3is used in the detection of phenols
B. Fehling solution is used in the detection of glucose
C. Tollen's reagent is used in detection of unsaturation
D. NaHSO3is used in the detection of carbonyl compounds
9 Acetaldehyde is used to make
A. Rubbber
B. Antiseptics
C. Phenolic resin
D. All of these
10 Which reaction yields Bakelite?
A. Urea with HCHO
B. Tetramethyl glycol with Hezamethylene diisocyanate
C. Phenol and HCHO
D. Ethylene glycol and Dimethylterephthalate

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