RBSE 12th Chemistry Deleted Syllabus 2026 Check Chapter Wise Syllabus

Abhishek Joshi

Updated on - Jun 12, 2025

Table of Contents

RBSE 12th Chemistry Deleted Syllabus 2026 - Chapter Wise
RBSE 12th Chemistry Syllabus 2026 PDF
RBSE 12th Chemistry Question Paper Pattern 2026
RBSE 12th Chemistry Topics Weightage 2026
Benefits of the RBSE 12th Chemistry Deleted Syllabus 2026

The Rajasthan Board of Secondary Education (RBSE) governs the syllabus for the 12th class in the state. The decision to implement the RBSE 12th Chemistry Deleted Syllabus will provide numerous benefits to the students. Therefore, candidates preparing for the RBSE 12th Exam should be aware of the updated syllabus.

The RBSE 12th Chemistry Deleted Syllabus will help to streamline the curriculum and it will also reduce excessive academic burden on students. The content of the syllabus has been aligned with the current educational goals. The RBSE 12th Deleted Syllabus helps in saving a lot of time and there is no doubt about it. Students can use the saved time to prepare for exams like JEE, NEET, etc. The Board has identified several less relevant concepts and such topics have been removed from the Chemistry syllabus. Chapters like solid state, environmental chemistry, polymers, etc. have been simplified. Thus, students will get an opportunity to create a strategic study plan. This will also help in improving the scores in the main exam.

This write-up discusses the RBSE 12th Chemistry Deleted Syllabus in detail. Hence, RBSE Science stream students must carefully go through the forthcoming information.

RBSE 12th Chemistry Deleted Syllabus 2026 - Chapter Wise

Knowing about the RBSE 12th Chemistry Deleted Syllabus will help in creating a rational study schedule. Here is the chapter-wise discussion of deleted topics in RBSE 12th Chemistry -

Chapters	Deleted Topics
Polymers	Industrial uses of synthetic rubbers Detailed polymerization mechanisms
Environmental Chemistry	Complex biodegradation pathways
Solid State	Detailed Bravais lattice types beyond cubic and basic crystal defects
Surface Chemistry	Adsorption isotherms (Freundlich & Langmuir equations) — extended derivations
Electrochemistry	Detailed construction of lead-acid and nickel-cadmium batteries
Organic Chemistry Mechanisms	Advanced electrophilic aromatic substitution mechanisms
Solutions	Abnormal molar mass and its calculation using colligative properties
Chemical Kinetics	Derivation of rate constant for zero and first-order reactions using graphical method
p-Block Elements	Structures of oxoacids of phosphorus and sulfur
d- and f-Block Elements	Lanthanide contraction and its consequences
Coordination Compounds	Werner’s theory Applications of coordination compounds
Haloalkanes and Haloarenes	Mechanism of SN1 and SN2 Reactions
Alcohols, Phenols, and Ethers	Reimer-Tiemann reaction Kolbe’s reaction Preparation of ethers
Aldehydes, Ketones, and Carboxylic Acids	Cannizzaro reaction Acidic strength of carboxylic acids
Organic Compounds Containing Nitrogen	Carbylamine Reaction Diazotization and coupling reactions
Polymers	Details of types and properties of synthetic rubbers and commercial polymers
Chemistry in Everyday Life	Classification of drugs Artificial sweeteners Cleansing agents

Also Read: RBSE 12th Admit Card

RBSE 12th Chemistry Syllabus 2026 PDF

Students must always prioritize checking the RBSE 12th Chemistry Deleted Syllabus. There is no need to revise those topics that are already deleted from the syllabus. One must always follow the updated syllabus for preparation. The table below shares the PDF for the updated RBSE 12th Chemistry syllabus -

RBSE 12th Chemistry Syllabus 2026 – Download PDF

Also Read: RBSE 12th Sample Papers

RBSE 12th Chemistry Question Paper Pattern 2026

The RBSE 12th Chemistry theory question paper is of 56 marks. 14 marks are for the internal assessment and 30 marks are for the practical exam. Hence, the total paper is of 100 marks. The theory question paper will be a mix of MCQs, fill-in-the-blanks, very short-answer-type questions, short-answer-type questions, long-answer-type questions, and essay-type questions. The table underneath discusses the RBSE 12th Chemistry question paper pattern in a very simplified way -

Section	Number of Questions	Marks Allotted
A	9 MCQs 4 Fill-in-the-blanks 8 Very short-answer-type questions (total 21 questions)	21 x 1 = 21
B	12 (short-answer-type questions)	12 x 1.5 = 18
C	3 (long-answer-type questions)	3 x 3 = 9
D	2 (essay-type questions)	2 x 4 = 8
Total		56

Also Read: RBSE 12th Previous Year Question Papers

RBSE 12th Chemistry Topics Weightage 2026

The students preparing for the RBSE Chemistry paper must know about the weightage of different topics. It will help in deciding the right preparation strategy and one can allocate a specific time limit to revise each topic. The table below gives the topic-wise weightage for the RBSE 12th Chemistry –

Topics	Weightage
Solid State	5%
Solutions	7%
Electrochemistry	10%
Chemical Kinetics	8%
Surface Chemistry	6%
General Principles and Processes of Isolation of Elements	4%
The p-Block Elements	8%
The d- and f-Block Elements	6%
Coordination Compounds	10%
Haloalkanes and Haloarenes	6%
Alcohols, Phenols and Ethers	7%
Aldehydes, Ketones and Carboxylic Acids	8%
Organic Compounds Containing Nitrogen	6%
Biomolecules	4%
Polymers	3%
Chemistry in Everyday Life	2%

Students must note that the percentages highlighted in the above table are the approximate values based on the syllabus pattern. For accurate knowledge, one must visit the designated website of the board at rajeduboard.rajasthan.gov.in.

Also Read: RBSE 12th Exam Preparation Tips

Benefits of the RBSE 12th Chemistry Deleted Syllabus 2026

There are many benefits of the RBSE 12th Chemistry Deleted Syllabus. Some of the most important points about the advantages have been discussed below –

The RBSE 12th Chemistry Deleted Syllabus will help in reducing academic burden. Hence, the stress level among students will go down.
Candidates can create a smart and effective preparation strategy with the help of the reduced syllabus.
A lot of time will be saved. Students can use this time to prepare for other important competitive exams like NEET, JEE, etc.
The marks will get better with a less amount of syllabus.
While solving the previous years’ question papers, there is no need to solve the questions from the deleted portion.
One can pay more attention to the core concepts in Chemistry. It will improve the foundational understanding of the subject.
Even the Chemistry teachers will get more time because of the deleted syllabus. They can devote some extra time to explaining the vital topics.