Which of the following is a primary amine?

A. CH3CONH2

B. CH3CH2NH2

C. CH3CH2OH

D. CH3COOH

Which compound is commonly used in the synthesis of dyes?

A. Ethanol

B. Aniline

C. Methanoic acid

D. Ethanoic acid

Which functional group is present in amides?

A. -OH

B. -NH2

C. -COOH

D. -CONH2

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

A. Amine

B. Amide

C. Ester

D. Nitrile

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

A. Ethanol

B. Methanal

C. Amino acids

D. Benzoic acid

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]

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]

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

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

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]

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]

Which of the following reactions is characteristic of amines?

A. Oxidation to form carboxylic acids

B. Reduction to form alcohols

C. Reaction with acids to form salts

D. Esterification

Which compound is used in the synthesis of pharmaceuticals due to its ability to act as a base?

A. Ethanol

B. Aniline

C. Methanoic acid

D. Ethanoic acid

Which of the following is a secondary amine?

A. CH3NH2

B. CH3CH2NH2

C. (CH3)2NH

D. CH3CONH2

Which compound is essential in biochemistry due to its role in protein synthesis?

A. Ethanol

B. Aniline

C. Amino acids

D. Benzoic acid

Which of the following compounds can exhibit geometric isomerism due to the presence of a C=N bond?

A. Alkane

B. Alkene

C. Amine

D. Imine

a) Define the term "amide" and describe its significance in biochemistry. [3]

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

c) Describe the hydrolysis of amides. [3]

a) What is the significance of nitro compounds in the synthesis of pharmaceuticals? [3]

b) Describe the general method of preparation of nitro compounds. [2]

c) How do nitro compounds behave in the presence of reducing agents? [3]

a) Describe the significance of amino acids in biochemistry. [3]

b) Explain the difference between essential and non-essential amino acids. [2]

c) How do amino acids react in acidic and basic environments? [3]

d) Describe the role of amides in the structure of proteins. [4]

a) What are diazonium salts, and how are they prepared? [3]

b) Describe the significance of diazonium salts in the synthesis of azo dyes. [3]

c) How do diazonium salts react with phenol? [3]

d) Explain the importance of nitro compounds in explosives. [3]

a) What is the significance of nitriles in organic synthesis? [3]

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

c) How can nitriles be converted into carboxylic acids? [3]

d) Explain the behaviour of nitriles in the presence of Grignard reagents. [3]