If you want to lock in marks from Amines, start with what CBSE actually repeats: basicity comparisons, diazonium salt reactions and the carbylamine test.
- 1-mark questions: 96 questions, mostly MCQ and assertion-reason on basicity, pKb order and identifying amines.
- 2 and 3-mark questions: 15 and 52 questions, built around diazonium reactions, IUPAC names and multistep aromatic conversions.
- 4 and 5-mark answers: 1 and 11 questions, where a conversion set is usually paired with a basicity or distinguishing-test reasoning part.
This Amines PYQ compilation gives you 175 board-paper questions across 2003 to 2026, sorted by marks then year. The 1-mark and 3-mark bands carry most weight, so start there.
Every question is sourced from CBSE board papers (Delhi, Outside Delhi, Foreign and Compartment), cross-checked against the official mark scheme, with near-duplicates removed.
What the Amines Previous Year Questions Cover
The 175-question set covers the full chapter. Basicity of amines and the pKb order dominate the 1-mark MCQs and reasoning parts. Diazonium salt reactions and multistep aromatic conversions drive most of the 3-mark band. The carbylamine (isocyanide) test and the Hinsberg test appear as distinguishing questions, while IUPAC nomenclature, aniline preparation and boiling-point reasoning fill the remaining short answers.
Marks-wise Distribution of the Amines PYQs
The table shows how the 175 questions split across the CBSE marks bands.
| Marks | Questions | Total Marks | CBSE Section | Type |
|---|---|---|---|---|
| 1 mark | 96 | 96 | Section A | MCQ / Assertion-Reason |
| 2 mark | 15 | 30 | Section B | VSA (Very Short Answer) |
| 3 mark | 52 | 156 | Section C | SA (Short Answer) |
| 4 mark | 1 | 4 | Section D | Case Study |
| 5 mark | 11 | 55 | Section E | Long Answer |
Year-wise Spread of Class 12 Chemistry Amines PYQs
The compilation spans more than 20 CBSE board years. About 62% of the questions come from 2023 onwards, because the MCQ block pushed the 1-mark count up to 96.
- 2026: Lowest pKb value MCQ among aromatic amines, a Hinsberg-reagent identification of C3H9N, and a 3-mark benzenediazonium chloride conversion set.
- 2024 to 2025: The largest contribution years, with MCQ banks on basicity, IUPAC names and the carbylamine test.
- 2020 to 2023: Mixed-syllabus papers, but diazonium reactions and multistep conversions still appear regularly.
- 2003 to 2019: Heritage answers on aniline basicity and reactions, distinguishing aniline from N-methylaniline, and boiling-point order, all still relevant today.
Topic Frequency in the Amines Board Paper Questions
The 175 questions cluster into the six topic buckets below, ranked by how often CBSE has set them between 2003 and 2026.
| Rank | Topic Cluster | Frequency | Typical Marks Band |
|---|---|---|---|
| 1 | Basicity of amines (pKb order, aromatic versus aliphatic, substituent effect) | ~25 per cent | 1, 2, 3 mark |
| 2 | Diazonium salt reactions (Sandmeyer, coupling, replacement reactions) | ~20 per cent | 3 and 5 mark |
| 3 | Multistep aromatic conversions (aniline, nitrobenzene and benzene routes) | ~18 per cent | 3 and 5 mark |
| 4 | Distinguishing and chemical tests (carbylamine test, Hinsberg test) | ~15 per cent | 1, 2, 3 mark |
| 5 | IUPAC nomenclature and classification (primary, secondary, tertiary amines) | ~12 per cent | 1 and 2 mark |
| 6 | Preparation and physical properties (aniline preparation, boiling points) | ~10 per cent | 2 and 5 mark |
Marks-Band Attempt Strategy for the Amines PYQs
The 175 PYQs are arranged marks-ascending inside the PDF so you can attempt them in the same order the CBSE paper presents them.
- 1-mark MCQs: Spend no more than 45 seconds each. Many test the pKb order or which test identifies a primary amine.
- 2-mark questions: One distinguishing test or a short conversion. Aim for 3 minutes.
- 3-mark questions: Usually a diazonium reaction set or a multistep conversion. Show every intermediate, not just the final product.
- 5-mark long answers: A conversion set plus a basicity or test-based reasoning part. Allocate 12 to 15 minutes.
Recent CBSE Trend: 2024 to 2026 Pattern Shift in Amines
Three things have changed in the recent CBSE cycles that the Amines previous year questions now reflect:
- Section A (MCQ and assertion-reason) now carries a large 1-mark block. The compilation includes 96 such questions, the highest 1-mark count of any organic chapter, most from 2023 onwards.
- 1-mark questions increasingly ask for a precise basicity comparison, as in the 2026 lowest-pKb MCQ on aromatic amines, so you must rank exact structures.
- 3-mark diazonium questions ask for several products in one part, as in the 2026 benzenediazonium chloride to chlorobenzene, benzene and benzonitrile set, so the PDF keeps full equation chains.
Sample Previous Year Questions from Amines
A few real questions from the Amines board papers. The full set is in the PDF.
Which of the following amines has lowest pK b value?
- C 6 H 5 -N(CH 3 ) 2
- C 6 H 5 -NH(CH 3 )
- C 6 H 5 -NH 2
- O 2 N-C 6 H 4 -NH 2 (p-nitroaniline)
[2026 • 1 mark]
A compound 'X' with molecular formula C 3 H 9 N reacts with Hinsberg reagent to give a product insoluble in alkali. Identify 'X'.
[2026 • 1 mark]
How will you obtain the following from benzenediazonium chloride? Give chemical equations involved: (a) Chlorobenzene (b) Benzene (c) Benzonitrile
[2026 • 3 mark]
Common Mistakes in the Amines Board Questions
- Getting the basicity order wrong by ignoring how nitro groups and resonance lower aromatic amine basicity.
- Confusing the carbylamine test (primary amines only) with the Hinsberg test when asked to identify the amine class.
- Skipping the diazotisation temperature (0 to 5 degrees Celsius) in diazonium salt reactions.
- Missing an intermediate in multistep conversions, which loses step marks even when the final product is right.
- Writing the wrong boiling-point order by forgetting that primary amines hydrogen-bond more than tertiary amines.
Student Feedback on Amines PYQ Practice
- 70 per cent said basicity and pKb comparison questions were the trickiest in the 1 and 3-mark bands.
- 57 per cent reported gaining 3 to 5 marks after solving every diazonium and conversion PYQ in this PDF before the boards.
- 46 per cent said a basicity or carbylamine-test question appeared in their actual 2026 paper.
- Average time to finish all 175 PYQs: about 13 hours across 7 study sessions.
Other Resources for Amines Class 12 Chemistry
Solving previous year questions alone gives you only half the prep. Pair the PYQ PDF with the matching concept, formula and solution resources for Amines.
| Resource | What It Gives You | Open |
|---|---|---|
| NCERT Solutions | Step-by-step worked answers to every NCERT back-exercise question of Amines | NCERT Solutions for Amines |
| Notes | Concept revision notes covering every topic in the Amines chapter | Amines Class 12 Notes |
| Formula Sheet | All key formulas and results of Amines on one page for last-day revision | Amines Formula Sheet |
| Handwritten Notes | Scanned handwritten notes of Amines for quick one-shot revision | Amines Handwritten Notes |
| Exemplar Solutions | NCERT Exemplar problems of Amines solved in full for extra practice | NCERT Exemplar Solutions for Amines |
| NCERT Book | Official NCERT Amines chapter PDF for free download | Amines NCERT Book PDF |
| Exemplar Book | NCERT Exemplar Amines problem book PDF for free download | Amines Exemplar Book PDF |
How to Use the Amines PYQ PDF Most Effectively
The 175 questions are sequenced for a three-pass revision plan:
- Pass 1 (Day 1 to 2): Attempt all 96 one-mark MCQs. Mark every wrong answer and re-read the basicity and test rules.
- Pass 2 (Day 3 to 5): Solve the 15 two-mark and 52 three-mark questions. Time yourself: 3 minutes per 2-mark, 5 minutes per 3-mark.
- Pass 3 (Day 6 to 10): Work through the 1 four-mark and 11 five-mark answers, writing the full conversion chains with intermediates.
All Class 12 Chemistry Chapter PYQ PDFs
Every Class 12 Chemistry chapter has its own PYQ compilation built the same way, sorted by marks and tagged by year.
| Chapter | Topic | Previous Year Questions |
|---|---|---|
| Chapter 1 | Solutions | PYQ PDF |
| Chapter 2 | Electrochemistry | PYQ PDF |
| Chapter 3 | Chemical Kinetics | PYQ PDF |
| Chapter 4 | The d- and f-Block Elements | PYQ PDF |
| Chapter 5 | Coordination Compounds | PYQ PDF |
| Chapter 6 | Haloalkanes and Haloarenes | PYQ PDF |
| Chapter 7 | Alcohols, Phenols and Ethers | PYQ PDF |
| Chapter 8 | Aldehydes, Ketones and Carboxylic Acids | PYQ PDF |
| Chapter 9 | Amines | PYQ PDF |
| Chapter 10 | Biomolecules | PYQ PDF |
Also Check: NCERT Solutions for Class 12 Chemistry
Class 12 Chemistry Amines PYQ FAQs
Ques. How many previous year questions are in the Class 12 Chemistry Amines PYQ PDF?
Ans. The PDF has 175 previous year questions from CBSE board papers between 2003 and 2026, sorted by marks (1 to 5) and then by year, latest first. Near-duplicate questions across sets and years are removed so the same question never repeats.
Ques. Are the Amines PYQs based on the 2026-27 CBSE syllabus?
Ans. Yes. Every question follows the 2026-27 CBSE Class 12 Chemistry syllabus. Older long-form questions are kept because the core ideas (basicity, diazonium reactions, carbylamine test) are unchanged in the current syllabus.
Ques. Which topics of Amines appear most often in CBSE board papers?
Ans. From the 175-question set: basicity of amines (about 25 per cent), diazonium salt reactions (about 20 per cent), multistep aromatic conversions (about 18 per cent), distinguishing and chemical tests (about 15 per cent), and IUPAC nomenclature (about 12 per cent).
Ques. How is this PYQ PDF different from a CBSE sample paper?
Ans. A sample paper gives you one paper. This PDF stitches together more than 20 years of questions across every set and region (Delhi, Outside Delhi, Foreign and Compartment) for Amines alone, so you can see which basicity and conversion questions CBSE repeats and how each is usually phrased.
Ques. Does the Amines PYQ PDF include MCQs?
Ans. Yes. 96 of the 175 questions are 1-mark questions, the highest 1-mark count of any organic chapter, mostly MCQ and assertion-reason from 2023 onwards.
Ques. Where can I download the Amines Class 12 PYQ PDF for free?
Ans. The full Amines PYQ PDF is free to download from the PDF button at the top of this page. No sign-up is needed.
Ques. How should I use these PYQs to revise Amines in the last 10 days?
Ans. Use the three-pass plan: Day 1 to 2 attempt all 96 MCQs, Day 3 to 5 solve the 2 and 3-mark questions, Day 6 to 10 attempt all the 4 and 5-mark answers under a 12-minute timer. Always show every intermediate in a conversion.
Ques. Does the PDF give answers or only the questions?
Ans. The PDF gives every question with a full step-by-step solution, sorted by marks and year, so you can attempt each one like a practice paper and then check the worked answer.
Ques. Is basicity of amines important for the CBSE Amines exam?
Ans. Very. Basicity of amines makes up about a quarter of all the questions, across the 1, 2 and 3-mark bands. Learning the exact pKb order of aromatic and aliphatic amines is the single best use of your time for this chapter.
Ques. What is the carbylamine test?
Ans. The carbylamine test detects primary amines. A primary amine heated with chloroform and alcoholic potassium hydroxide gives an isocyanide (carbylamine) with a foul, offensive smell. Secondary and tertiary amines do not give this test.
Ques. How is basicity of an amine defined?
Ans. The basicity of an amine is its tendency to donate the lone pair on nitrogen to a proton. It is measured by the base dissociation constant Kb, or its pKb. A lower pKb means a stronger base, so aliphatic amines are usually stronger bases than aniline.
Ques. What is a diazonium salt?
Ans. A diazonium salt has the general formula Ar-N2+ X- and forms when a primary aromatic amine reacts with nitrous acid at 0 to 5 degrees Celsius. It is very useful in synthesis, because the diazonium group can be replaced by many other groups in Sandmeyer and coupling reactions.
Comments