HBSE 12th Chemistry Deleted Syllabus 2026: Check Chapter Wise Deleted Syllabus
Table of Contents
The Haryana board has made considerable changes to the 12th-grade Chemistry curriculum. Since the COVID-19 pandemic, the HBSE 12th Chemistry syllabus has changed several times in an attempt to lessen academic stress of students like you and to make the studies more productive and practical. Some challenging and repetitive topics have been removed to let you to focus on the main chemical concepts and theories for the HBSE 12th Exam 2026 and other competitive exams like JEE and NEET.
To properly study for the upcoming board exams, it is advised that you go over the HBSE 12th Deleted Syllabus 2026. Removing some of the curriculum would make it easier for you to learn and revise all the topics from the syllabus before the board exams. The Haryana board's official website, bseh.org.in, has the revoked curriculum. For those of you who will be sitting your 12th boards in the academic year 2025–2026, this post contains the HBSE 12th Chemistry Deleted Syllabus 2026.
Also Read: HBSE 12th Syllabus 2026
HBSE 12th Chemistry Deleted Syllabus 2026 - Chapter Wise
The chapter-by-chapter deleted Chemistry syllabus is available on the official website of the Haryana board. The syllabus eliminated a few topics that weren't particularly important for you.The chapter-by-chapter HBSE 12th Chemistry Deleted Syllabus 2026 is shown in the table below:
| Chapters | Deleted Topics |
|---|---|
| The Solid State | Electrical and magnetic properties |
| Solutions | Abnormal molecular mass |
| Electrochemistry |
Laws of electrolysis (elementary idea) Dry cell – electrolytic cells and Galvanic cells Lead accumulator Fuel cells Corrosion |
| Chemical Kinetics | Concept of collision theory (elementary idea, no mathematical treatment) |
| Surface Chemistry |
Catalysis : homogenous and heterogeneous Activity and selectivity: enzyme catalysis Emulsion – types of emulsions |
| General Principles and Processes of Isolation of Elements |
Principles and methods of extraction - concentration, oxidation, reduction electrolytic method and refining Occurrence and principles of extraction of aluminium, copper, zinc and iron |
| The p-Block Elements |
Group 15 elements: Oxides of nitrogen (structure only) Phosphorous-allotropic forms Compounds .of phosphorous Preparation and properties of phosphine, halides (PCl3, PCl5) and oxoacids (elementary idea only) Group 16 elements: Sulphuric acid: industrial process of manufacture, properties and uses, oxoacids of sulphur (structures only) |
| The d and f-Block Elements |
Preparation and properties of K2Cr2O7 and KMnO4 Lanthanoids - Chemical reactivity Actinoids - Electronic configuration, oxidation states |
| Coordination Compounds | Importance of coordination compounds (in qualitative analysis, extraction of metals and biological systems) |
| Haloalkanes and Haloarenes | Uses and environmental effects of - dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT |
| Alcohols, Phenols and Ethers | Alcohols: Uses of methanol and ethanol |
| Aldehydes, Ketones and Carboxylic Acids | No topic Deleted |
| Amines | Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry |
| Biomolecules |
Carbohydrates - Oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen); importance Proteins - Enzymes Vitamins -Classification and functions |
HBSE 12th Chemistry Syllabus 2026 PDF
The Haryana board's official website has the new Chemistry syllabus, after the deletion of certain topics.The new syllabus covers every topic that is important to you. Below is a link to the HBSE 12th Chemistry Syllabus PDF:
| HBSE 12th Chemistry Syllabus 2026 PDF |
Also read: HBSE 12th sample papers
HBSE 12th Chemistry Question Paper Pattern 2026
To study for the Chemistry board exam, you must be aware of the question paper pattern.On the Chemistry question paper, 70 is the maximum attainable score.It is divided into five sections. Section A consists of 18-mark multiple-choice questions (MCQ).Section B consists of very short answer questions earning 14 marks.There are 15-mark short answer questions in Section C. There are case based questions carrying 8 marks in Section D. There are 15-mark long answer questions in Section E. The format of the Chemistry question paper is displayed in the following table:
| Section | Number of questions | Marks Allotted |
|---|---|---|
| A | 18 | 1 mark for each question |
| B | 7 | 2 mark for each question |
| C | 5 | 3 marks for each question |
| D | 2 | 4 marks for each question |
| E | 3 | 5 marks for each question |
Also read: HBSE 12th exam pattern
HBSE 12th Chemistry Topics Weightage 2026
Different topics have varying weights assigned to them according to their importance.Understanding the weightage of each topic is crucial for board preparation.Focus on the topics with high weightage. The weightage of the various topics of Chemistry are given in the following table:
| Units | Weightage |
|---|---|
| Solutions | 11% |
| Electrochemistry | 11% |
| Chemical Kinetics | 10% |
| The d and f-Block Elements | 10% |
| Coordination Compounds | 10% |
| Haloalkanes and Haloarenes | 9% |
| Alcohols, Phenols and Ethers | 9% |
| Aldehydes, Ketones and Carboxylic Acids | 11% |
| Amines | 9% |
| Biomolecules | 10% |
Also read: HBSE 12th previous year question papers
What are the benefits of HBSE 12th Chemistry Deleted Syllabus 2026?
The following are the advantages of the HBSE 12th Chemistry deleted syllabus 2026:
- It reduces your academic stress.
- You can finish your syllabus on schedule.
- Shorter syllabuses are easier for less clever students to understand.
- Repetitive ideas and irrelevant topics don't need to take up your time and effort.
- You can concentrate on the crucial topics with ease.
- The challenging chapters can be given more time.
- The syllabus is subject to revision.
For all of the details regarding the HBSE 12th Chemistry deleted syllabus 2026, anyone planning to sit for the HBSE 12th board exams should frequently check this page.
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