Detection of the following Functional Groups: Hydroxyl, Carbonyl Carboxyl, and Amino Groups in Organic Compounds NEET Questions

Organic Chemistry - Principles of Practical Chemistry

Detection of the following Functional Groups: Hydroxyl, Carbonyl Carboxyl, and Amino Groups in Organic Compounds MCQ Questions


13.

Carboxylic acids evolve CO2 with

A.

HCl

B.

NaHCO3

C.

NaOH

D.

NH3

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ANSWER :

B. NaHCO3

14.
Which functional group reacts with NaHCO3 releasing gas?
A.
Alcohol
B.
Phenol
C.
Carboxylic acid
D.
Aldehyde
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ANSWER :
C. Carboxylic acid
15.

Which group gives brisk effervescence with NaHCO3?

A.

–OH

B.

–CHO

C.

–COOH

D.

–NH2

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ANSWER :

C. –COOH

16.
Brady’s reagent is used to test
A.
Phenol
B.
Alcohol
C.
Aldehyde and ketone
D.
Amine
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ANSWER :
C. Aldehyde and ketone
17.

Which compound gives effervescence with NaHCO3?

NEET - 2018

A.

Phenol

B.

Benzoic acid

C.

Ethanol

D.

Acetone

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ANSWER :

B. Benzoic acid

18.
2,4-DNP gives a yellow/orange ppt with
A.
Aldehydes and Ketones
B.
Alcohols
C.
Phenols
D.
Acids
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ANSWER :
A. Aldehydes and Ketones