Question 1Section A: multiple choice
of BaCl₂ solution is mixed with of Na₂SO₄ solution, and BaSO₄ precipitates completely. Taking the volumes as additive, what is the concentration of sulphate ions left in the solution?
JEE Main 2027 chemistry syllabus and paper pattern
Chemistry in JEE (Main) Paper 1 is 25 questions for 100 marks: 20 multiple choice in Section A and 5 numerical-value questions in Section B, on a 20-unit syllabus.
12 weeks, 96 hours in all
Start with Section 3
Solutions and equilibrium: 9.6 of your hours. It is 6 of the 50 questions on our two timed papers, 12%.
| Section | Your hours | Share of the papers |
|---|---|---|
| Section 3: Solutions and equilibrium | 9.6 | 12% |
| Section 4: Redox, electrochemistry and kinetics | 9.6 | 12% |
| Section 1: Basic concepts and atomic structure | 8 | 10% |
| Section 2: Bonding and thermodynamics | 8 | 10% |
| Section 5: Periodicity and the p-block | 8 | 10% |
| Section 6: The d- and f-block and coordination compounds | 8 | 10% |
| Section 7: Purification, analysis and basic organic principles | 8 | 10% |
| Section 8: Hydrocarbons and organic halogen compounds | 8 | 10% |
| Section 10: Biomolecules and practical chemistry | 6.4 | 8% |
| Section 9: Organic compounds containing oxygen and nitrogen | 6.4 | 8% |
Week by week
- Week 1Section 3: Solutions and equilibrium
- Week 2Section 3: Solutions and equilibrium, Section 4: Redox, electrochemistry and kinetics
- Week 3Section 4: Redox, electrochemistry and kinetics, Section 1: Basic concepts and atomic structure
- Week 4Section 1: Basic concepts and atomic structure, Section 2: Bonding and thermodynamics
- Week 5Section 2: Bonding and thermodynamics, Section 5: Periodicity and the p-block
- Week 6Section 5: Periodicity and the p-block, Section 6: The d- and f-block and coordination compounds
- Week 7Section 6: The d- and f-block and coordination compounds, Section 7: Purification, analysis and basic organic principles
- Week 8Section 7: Purification, analysis and basic organic principles, Section 8: Hydrocarbons and organic halogen compounds
- Week 9Section 8: Hydrocarbons and organic halogen compounds, Section 10: Biomolecules and practical chemistry
- Week 10Section 10: Biomolecules and practical chemistry, Section 9: Organic compounds containing oxygen and nitrogen
- Week 11A timed paper and five numerical-value questions, then go over every lost mark
- Week 12A timed paper and five numerical-value questions, then go over every lost mark
| Section A | 20 multiple-choice questions |
|---|---|
| Section B | 5 numerical-value questions, answered as an integer |
| Marks | 100 for chemistry, 300 for Paper 1 |
| Time | 3 hours for mathematics, physics and chemistry together |
The 20 syllabus units
- Physical chemistry: some basic concepts in chemistry; atomic structure; chemical bonding and molecular structure; chemical thermodynamics; solutions; equilibrium; redox reactions and electrochemistry; chemical kinetics.
- Inorganic chemistry: classification of elements and periodicity in properties; p-block elements; d- and f-block elements; coordination compounds.
- Organic chemistry: purification and characterisation of organic compounds; some basic principles of organic chemistry; hydrocarbons; organic compounds containing halogens; organic compounds containing oxygen; organic compounds containing nitrogen; biomolecules; principles related to practical chemistry.
The practical chemistry unit
Unit 20 asks for the chemistry behind laboratory work: detecting nitrogen, sulphur and halogens and the hydroxyl, carbonyl, carboxyl and amino groups; preparing Mohr's salt, potash alum, acetanilide, p-nitroacetanilide, aniline yellow and iodoform; acid-base titrations and titrations of oxalic acid and Mohr's salt against KMnO₄; salt analysis for ten listed cations and eight listed anions; and four experiments, from the enthalpy of solution of CuSO₄ to the reaction of iodide ions with hydrogen peroxide.
How this course maps the units
The course groups the 20 units into ten sections, each with two lessons, Section A practice, Section B practice and its share of the two timed papers. Set the planner above with the weeks you have left and how sure you are of each section, and it splits your hours.
Try 3 questions
Question 2Section A: multiple choice
of HCl is mixed with of Ba(OH)₂ at . What is the pH of the mixture? ( , )
Question 3Section A: multiple choice
3-Methylbut-1-ene, CH₂=CH-CH(CH₃)₂, reacts with HCl. What is the major product?
Next step
Questions people ask
How many chemistry questions are there in JEE Main Paper 1?
25: 20 multiple-choice questions in Section A and 5 numerical-value questions in Section B, for 100 marks.
Are the Section B questions optional?
The 2027 Information Bulletin lists 20 Section A and 5 Section B questions for chemistry and does not say that any are optional.
Which ions does the salt analysis part list?
The cations Pb²⁺, Cu²⁺, Al³⁺, Fe³⁺, Zn²⁺, Ni²⁺, Ca²⁺, Ba²⁺, Mg²⁺ and NH₄⁺ and the anions CO₃²⁻, S²⁻, SO₄²⁻, NO₃⁻, NO₂⁻, Cl⁻, Br⁻ and I⁻. The 2027 syllabus excludes insoluble salts.