Organic Chemistry Questions and Answers – Physical Properties of Amines | Organic Chemistry Multiple Choice Questions and Answers

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Questions
1 Which of the following compound is expected to be most basic?
A Aniline
B Methylamine
C Hydroxylamine
D Ethylamine

Answer:Ethylamine
2 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: Turns red litmus blue
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3 Which of the following statement is true about methyl amine?
A Methyl amine is slightly acidic
B Methyl amine is less basic than NH3
C Methyl amine is stronger base than NH3
D Methyl amine forms salts with alkali

Answer:Methyl amine is stronger base than NH3
4 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: Increased
5 What is the characteristic smell of liquid amines?
A Fish like smell
B Rotten egg smell
C Fruity smell
D Bitter almond smell

Answer:Fish like smell
6 Which of the following have less melting point than amine?
A Alcohol
B Phosphine
C Carboxylic acid
D Ether

Answer:Phosphine
7 Which of the following amine has highest boiling point?
A Butyl amine
B Diethylamine
C Triethylamine
D Dipropylamine

Answer:Dipropylamine
8 What is the correct decreasing order of the basic character of the three amines and ammonia?
A NH3 > CH3NH2 > C2H5NH2 > C6H5NH2
B C2H5NH2 > CH3NH2 > NH3 > C6H5NH2
C C6H5NH2 > C2H5NH2 > CH3NH2 > NH3
D CH3NH2 > C2H5NH2 > C6H5NH2 > NH3

Answer: C2H5NH2 > CH3NH2 > NH3 > C6H5NH2
9 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: Any primary amine
10 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:Dimethyl amine is less basic than methyl amine

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