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IB DP Chemistry Questions

20.4 Nitrogen-Containing Compounds

Question 1

Which of the following is a primary amine?





Question 2

Which compound is commonly used in the synthesis of dyes?

A. Ethanol

B. Aniline

C. Methanoic acid

D. Ethanoic acid

Question 3

Which functional group is present in amides?

A. -OH

B. -NH2



Question 4

Which of the following is NOT a nitrogen-containing compound?

A. Amine

B. Amide

C. Ester

D. Nitrile

Question 5

Which compound plays a significant role in the structure of proteins?

A. Ethanol

B. Methanal

C. Amino acids

D. Benzoic acid

Question 6

a) Define the term "amine" and explain how amines are classified based on their structure. [3]

b) Describe the general reaction of primary amines with carboxylic acids. [2]

Question 7

a) What is the significance of nitriles in the synthesis of other organic compounds? [2]

b) Explain the hydrolysis of nitriles and the products formed. [3]

Question 8

a) Describe the structure and significance of amides in proteins. [3]

b) How do amides differ from amines in terms of their reactivity? [2]

Question 9

a) Explain the difference between primary, secondary, and tertiary amines in terms of their structure. [3]

b) How do the boiling points of amines vary with their structure? [2]

c) Describe the reaction of amines with nitrous acid. [3]

Question 10

a) What are azo dyes and why are they significant in the dye industry? [3]

b) Describe the general method of preparation of azo dyes. [3]

c) Why are azo dyes often brightly coloured? [2]

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