Explore topic-wise MCQs in Organic Chemistry.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Organic Chemistry knowledge and support exam preparation. Choose a topic below to get started.

1.

Which of the following is most basic?

A. C6H5NH2
B. (CH3)2NH
C. (CH3)3N
D. NH3
Answer» C. (CH3)3N
Discussion
2.

Which statement is an incorrect statement?

A. Amines form hydrogen bond
B. Ethyl amine has higher boiling point than propane
C. Methyl amine is more basic than ammonia
D. Dimethyl amine is less basic than methyl amine
Answer» E.
Discussion
3.

Unpleasant smelling carbylamines are formed by heating alkali and chloroform with which of the following?

A. Any amine
B. Any aliphatic amine
C. Any aromatic amine
D. Any primary amine
Answer» E.
Discussion
4.

UNPLEASANT_SMELLING_CARBYLAMINES_ARE_FORMED_BY_HEATING_ALKALI_AND_CHLOROFORM_WITH_WHICH_OF_THE_FOLLOWING??$

A. Any amine
B. Any aliphatic amine
C. Any aromatic amine
D. Any primary amine
Answer» E.
Discussion
5.

Which of the following is most basic?$

A. C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub>
B. (CH<sub>3</sub>)<sub>2</sub>NH
C. (CH<sub>3</sub>)<sub>3</sub>N
D. NH<sub>3</sub>
Answer» C. (CH<sub>3</sub>)<sub>3</sub>N
Discussion
6.

Which_statement_is_an_incorrect_statement?$

A. Amines form hydrogen bond
B. Ethyl amine has higher boiling point than propane
C. Methyl amine is more basic than ammonia
D. Dimethyl amine is less basic than methyl amine
Answer» E.
Discussion
7.

The correct order of basicity of amines in water is which of the following?

A. (CH<sub>3</sub>)<sub>2</sub>NH > (CH<sub>3</sub>)<sub>3</sub>N > CH<sub>3</sub>NH<sub>2</sub>
B. CH<sub>3</sub>NH<sub>2</sub> > (CH<sub>3</sub>)<sub>2</sub>NH > (CH<sub>3</sub>)<sub>3</sub>N
C. (CH<sub>3</sub>)<sub>3</sub>N > (CH<sub>3</sub>)<sub>2</sub>NH > CH<sub>3</sub>NH<sub>2</sub>
D. (CH<sub>3</sub>)<sub>3</sub>N > CH3NH<sub>2</sub> > (CH<sub>3</sub>)<sub>2</sub>NH
Answer» B. CH<sub>3</sub>NH<sub>2</sub> > (CH<sub>3</sub>)<sub>2</sub>NH > (CH<sub>3</sub>)<sub>3</sub>N
Discussion
8.

Which of the following is true characteristic feature of aniline?

A. Colourless solid
B. Brown coloured solid
C. Colourless liquid
D. Brown coloured liquid
Answer» D. Brown coloured liquid
Discussion
9.

Among the following, which one is the strongest base?

A. C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub>
B. p‚àíNO<sub>2</sub>C<sub>6</sub>H<sub>4</sub>NH<sub>2</sub>
C. m‚àíNO<sub>2</sub>‚àíC<sub>6</sub>H<sub>4</sub>NH<sub>2</sub>
D. C<sub>6</sub>H<sub>5</sub>CH<sub>2</sub>NH<sub>2</sub>
Answer» E.
Discussion
10.

If methyl is alkyl group, then which order of basicity is correct?

A. R<sub>2</sub>NH > RNH<sub>2</sub> > R<sub>3</sub>N > NH<sub>3</sub>
B. R<sub>2</sub>NH > R<sub>3</sub>N > RNH<sub>2</sub> > NH<sub>3</sub>
C. RNH<sub>2</sub> > NH<sub>3</sub> > R<sub>2</sub>NH > R<sub>3</sub>N
D. NH<sub>3</sub> > RNH<sub>2</sub> > R<sub>2</sub>NH > R<sub>3</sub>N
Answer» B. R<sub>2</sub>NH > R<sub>3</sub>N > RNH<sub>2</sub> > NH<sub>3</sub>
Discussion
11.

What is the correct decreasing order of the basic character of the three amines and ammonia?

A. NH<sub>3</sub> > CH<sub>3</sub>NH<sub>2</sub> > C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub> > C6H5NH<sub>2</sub>
B. C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub> > CH<sub>3</sub>NH<sub>2</sub> > NH<sub>3</sub> > C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub>
C. C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub> > C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub> > CH<sub>3</sub>NH<sub>2</sub> > NH<sub>3</sub>
D. CH<sub>3</sub>NH<sub>2</sub> > C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub> > C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub> > NH<sub>3</sub>
Answer» C. C<sub>6</sub>H<sub>5</sub>NH<sub>2</sub> > C<sub>2</sub>H<sub>5</sub>NH<sub>2</sub> > CH<sub>3</sub>NH<sub>2</sub> > NH<sub>3</sub>
Discussion
12.

Which of the following amine has highest boiling point?

A. Butyl amine
B. Diethylamine
C. Triethylamine
D. Dipropylamine
Answer» E.
Discussion
13.

Which of the following have less melting point than amine?

A. Alcohol
B. Phosphine
C. Carboxylic acid
D. Ether
Answer» C. Carboxylic acid
Discussion
14.

What is the characteristic smell of liquid amines?

A. Fish like smell
B. Rotten egg smell
C. Fruity smell
D. Bitter almond smell
Answer» B. Rotten egg smell
Discussion
15.

By the presence of a halogen atom in the ring, what is the effect of this on basic properties of aniline?

A. Increased
B. Decreased
C. Unchanged
D. Doubled
Answer» B. Decreased
Discussion
16.

Which of the following statement is true about methyl amine?

A. Methyl amine is slightly acidic
B. Methyl amine is less basic than NH<sub>3</sub>
C. Methyl amine is stronger base than NH<sub>3</sub>
D. Methyl amine forms salts with alkali
Answer» D. Methyl amine forms salts with alkali
Discussion
17.

A solution of methyl amine shows which type of property with litmus paper?

A. Turns blue litmus red
B. Turns red litmus blue
C. Does not affect red or blue litmus
D. Bleaches litmus
Answer» C. Does not affect red or blue litmus
Discussion
18.

Which of the following compound is expected to be most basic?

A. Aniline
B. Methylamine
C. Hydroxylamine
D. Ethylamine
Answer» E.
Discussion