Chemistry Worksheets Class 12 on Chapter 13 Amines with Answers - Set 3

Amines are the spin-offs of ammonia (NH₃). The alkyl group replaces one or more hydrogen atoms in amines. A primary amine has one alkyl group attached to the major nitrogen atom. A secondary amine has two alkyl groups attached to the major nitrogen atom. In contrast, a tertiary amine has three alkyl groups attached to the major nitrogen atom.

Download Class 12 Chemistry Worksheet on Chapter 13 Amines PDF – Set 3

Download PDF

CBSE Class 12 Chemistry Chapter 13 Amines Worksheet – Set 3

Q1. How many isomeric amines can have the formula C₄H₁₁N?

(a) Five

(b) Six

(c ) Seven

(d) None of the above

Q2. What is the hybridisation of the nitrogen atom in piperidine?

(a) sp

(b) sp²

(c ) sp³

(d) None of the above

Q3. Dimethyl amine reacts with nitrous acid to produce

(a) (CH₃)₂NNO

(b) CH₃OH

(c ) N₂⁺ CH₃OH

(d) None of the above

Q4. Benzene diazonium chloride reacts with hypophosphorous acid to produce

(a) Phenol

(b) Benzene

(c ) Cyano benzene

(d) None of the above

Q5. Aniline produces a Schiff base on reaction with

(a) Ammonia

(b) Acetyl chloride

(c ) Benzaldehyde

(d) None of the above

Q6. Write the IUPAC and common name of the following compound.

Q7. Draw the structure of N-Ethyl-4- isopropyl- N- methyl aniline.

Q8. Complete the following reaction.

Q9. Convert p- toluidine diazonium chloride to p- toluic acid.

Q10. Why can tertiary butyl amine not be prepared by the action of ammonia on tertiary butyl bromide?

Q11. Why is aryldiazonium ion more stable than alkyl diazonium ion?

Q12. Why is p-methoxy aniline a stronger base than aniline but p-nitroaniline is a weaker base than aniline?

Q13. Why can’t we prepare aniline by the Gabriel Phthalimide reaction?

Q14. Why are sulphanilic salts insoluble in water and organic solvents?

Q15. Why is an amide more acidic than an amine?

Q16. Which is a more basic PhNH₂ or Ph₂NH?

Q17. An optically inactive compound (A) having the molecular formula (C₄H₁₁N) on treatment with HNO₂ gave alcohol (B). (B) on heating at 410 K gave an alkene (C). (C) on treatment with HBr gave an optically active compound (D) having the molecular formula C₄H₉Br. Identify A, B, C and D and write down their structural formulae. Also, write the equations involved.

Q18. An organic compound A (C₃H₅N) on boiling with alkali gives ammonia and sodium salt of an acid B (C₃H₆O₂). A on reduction gives C (C₃H₉N) which with nitrous acid gives D (C₃H₈O). Give the structural formulae of A, B, C and D and the reactions involved.

Q19. Identify A, B and C in the following reaction.

Q20. How will you convert?

(a) Benzene to Aniline

(b) Benzoic acid to Aniline

Download the PDF to access answers to the Chemistry Worksheet for Class 12 Chemistry Chapter 13 Amines Set – 3.
Download PDF

Read Also:

• Chemical Reactions of Amines – Acylation and Basicity
• Amines Questions
• Classification and Nomenclature of Amines
• Amines
• Physical Properties of Amines with Characteristics
• Chemical Reactions of Amines – Electrophilic Substitution
• Class 12 Chemistry Chapter 13 Amines MCQs
• Important Questions for Class 12 Chemistry Chapter 13 – Amines.