Chemistry Class 12 Marks Distribution with Weightage 2026
Chemistry Class 12 Marks Distribution: CBSE, ISC, Bihar, Maharashtra HSC, UP and CGBSE board students can check topic-wise weightage for Class 12 Chemistry. This will help them understand exam format, pattern and marking schemes in board exam preparation.
Chemistry Marks Distribution
Chemistry Class 12 Marks Distribution: Students preparing for board exam should understand Chemistry Class 12 marks distribution and weightage to know how marks are divided in different units and chapters. Class 12 Chemistry chapter-wise weightage helps students in knowing important topics and check high scoring units.
It must be noted that Chemistry Class 12 exam pattern includes theory paper, practical exam and internal assessment. Knowing Chemistry weightage for Class 12 board exams helps in better revision planning. For upcoming board exams, students can check detailed Chemistry Class 12 chapter-wise weightage for CBSE, ISC, Maharashtra, UP, CGBSE and other boards on this page.
As per passing criteria, students appearing for CBSE Class 12 board exams must score at least 33% marks in each subject to pass. If a student obtains overall pass percentage but fails in one subject, they will have to appear for Class 12 supplementary exam. In Maharashtra HSC Chemistry 12, students have to obtain 35 percent marks.
- CBSE Class 12 Chemistry Weightage
- ISC Class 12 Chemistry Weightage 2026
- Bihar Board 12th Chemistry Weightage 2026
- Maharashtra HSC Chapter-wise weightage for Chemistry 2026
- UP Board 12 Chemistry Weightage
- MP Board 12 Chemistry Marks Distribution & Weightage
- CGBSE 12th Marks Distribution and Weightage
CBSE Class 12 Chemistry Weightage
Students can check unit wise distribution of marks for CBSE Class 12 Chemistry exam
| Unit |
Marks |
|---|---|
| Solutions |
7 |
| Electrochemistry |
9 |
| Chemical Kinetics |
7 |
| d -and f -Block Elements |
7 |
| 7 |
|
| Haloalkanes and Haloarenes |
6 |
| 6 |
|
| Aldehydes, Ketones and Carboxylic Acids |
8 |
| Amines |
6 |
| 7 |
|
| Total |
70 |
Commonly asked questions
Maharashtra HSC datesheet 2027 will be released in October. The date sheet will be made available in PDF form. It carries the subject-wise exam dates.
When appearing for the Maharashtra 12th board exams, you must feel relaxed and comfortable. Yes, you will be allowed to go to the washroom during the examination but only once and with an invigilator. Students often use washroom for using unfair means and cheat in board exams, however, they must know that the invigilator can frisk them anytime during the exam duration. So, it is recommended to use washroom only when needed.
CBSE 12th date sheet 2027 will be released soon. The board first releases the tentative date sheet in September. Following which, the final date sheet is released in October.
No, CBSE released the CBSE Class 12 date sheet for all subjects together. However, to make the exam dates simpler to find and use, Shiksha.com divides and shares the CBSE 12th date sheet according to three streams - Science, Commerce and Arts.
Students can click on CBSE 12th Date Sheet to check stream-wise date sheet for CBSE 12th board exams.
ISC Class 12 Chemistry Weightage 2026
The weightage of each chapter helps students score well in the Chemistry Class 12 ISC Board exam. Check the unit wise distribution of marks for ISC Class 12 Chemistry exam.
| Unit |
Marks Distribution |
|---|---|
| Solutions |
Physical Chemistry |
| Electrochemistry |
|
| Chemical Kinetics |
|
| d-and-f-Block Elements |
Inorganic Chemistry |
| Coordination Compounds |
|
| Haloalkanes and Haloarenes |
Organic Chemistry |
| Alcohols, Phenols and Ethers |
|
| Aldehydes, Ketones and Carboxylic acids |
|
| Organic Compounds Containing Nitrogen |
|
| Biomolecules |
|
| Total Marks |
70 |
Bihar Board 12th Chemistry Weightage 2026
Below is unit wise distribution of marks for Bihar Board (BSEB) chemistry exam.
| Unit |
Weightage |
|---|---|
| Solid State |
04 |
| Solutions |
05 |
| Electrochemistry |
05 |
| Chemical Kinetics |
05 |
| Surface Chemistry |
04 |
| General Principles and Processes of Isolation of Elements |
03 |
| p-block Elements |
08 |
| d and f-block elements |
05 |
| Coordination Compounds |
03 |
| Haloalkanes and Haloarenes |
04 |
| Alcohols, Phenols, and Ethers |
04 |
| Aldehydes, Ketones, and Carboxylic Acids |
06 |
| Organic Compounds and containing Nitrogen |
04 |
| Biomolecules |
04 |
| Polymers |
03 |
| Chemistry in Everyday Life |
03 |
| Total |
70 |
Commonly asked questions
BSEB will announce the Bihar Board 12th time table 2027 in November this year. BSEB Class 12 exams 2027 is expected to be conducted in February 2027. The board conducts the BSEB Inter exam 2027 in offline mode in two shifts.
Bihar School Examination Board will soon come up with the BSEB class 12 timetable 2027. The board releases the Bihar Board Inter Time Table 2027 online on its official website at biharboardonline.com and biharboardonline.bihar.gov.in. Class 12 time table 2027 Bihar Board mentions the subject-wise exam date, exam commencement and ending time, reporting time, and more.
You must not forget to carry your CBSE 12th admit card on all exam days. In case you forget, you will not be allowed to write the exam. Along with the CBSE 12th admit card and school ID, students must also carry their pens, pencils, ruler. geometry box etc.
The board releases the CBSE 12th admit card in the first week of February on the official website. Students need to collect their admit card from their school respectively. The CBSE 12th exams are held from February until April every year.
Yes, every year, the state board will conduct the BSEB 12th supplementary exams for the students who fail in the BSEB Inter exams. After the declaration of board results, BSEB will come up with the date to conduct the class 12 compartment exam. As soon as the dates are announced, students can check the same on the official website of the board and on this page as well. The board will release applications for the BSEB 12th compartment exams. However, it is expected that the BSEB 12th compartment and improvement exam will be held in Apr/May 2025.
Maharashtra HSC Chapter-wise weightage for Chemistry 2026
Check the unit-wise distribution of marks for the Maharashtra HSC chemistry exam.
| Unit |
Marks without option |
Marks with option |
|---|---|---|
| Solid State |
04 |
06 |
| Solutions and Colligative Properties |
05 |
07 |
| Chemical Thermodynamics and Energetic |
06 |
08 |
| Electrochemistry |
05 |
07 |
| Chemical Kinetics |
04 |
06 |
| General Principles and Processes of Isolation of Elements |
03 |
05 |
| p-Block Elements |
08 |
10 |
| d and f – Block Elements |
05 |
06 |
| Coordination Compounds |
03 |
04 |
| Halogen Derivatives of Alkanes and Arenes |
04 |
06 |
| Alcohols, Phenols, and Ethers |
04 |
06 |
| Aldehydes, Ketones and Carboxylic Acids |
05 |
07 |
| Compounds Containing Nitrogen
|
04 |
06 |
| Biomolecules |
04 |
06 |
| Polymers |
03 |
04 |
| Chemistry in Everyday Life |
03 |
04 |
UP Board 12 Chemistry Weightage
Students can check chapter-wise weightage for Class 12th Chemistry, as per UP Board exam pattern
As per exam pattern of UP Board class 12th, practical exam is held for 30 marks and theory paper is conducted for 70 marks. The theory exam is divided into two papers and Chemistry marks distribution is same for both papers.
| Papers |
Units |
Marks Distribution |
|---|---|---|
| Paper 1 |
General and Inorganic Chemistry |
35 marks |
| Paper 2 |
Physical and Organic Chemistry |
35 marks |
Commonly asked questions
Maharashtra HSC exams are held in two shifts. The Morning Shift is conducted from 11 am to 2.10 pm. The evening shift is held from 3 pm to 6 .10 pm. Students need to reach the exam centre on time.
Maharashtra HSC dates are announced online by the Maharashtra State Board of Secondary and Higher Secondary Education. The direct link to download is made available on this page. The date sheet PDF comprises the important date related to the exam.
The total marks in the BSEB Class 12 exam are 500. Bihar Board 12th exams are held for a total of five subjects. Hence, the result is prepared for the 500 marks only. Each paper of the exam consists of 100 marks. On the other hand, in some papers, theory exams are held for a total of 70 marks while practical exams are held for a total of 30 marks. These subjects include Physics, Chemistry, Biology, Geography, Home Science, Psychology, etc.
MP Board 12 Chemistry Marks Distribution & Weightage
MPBSE 12th board exam have theory and a practical or project-based section. MP Board 12 Chemistry theory exam is of 80 marks and project work is conducted for 20 marks. For subjects with practical section, the theory paper is of 70 marks and practical exams are held for 30 marks. Students can check table below to know Madhya Pradesh class 12th marks distribution here
| Type of Questions |
Number of Questions |
Marks Per Questions |
|---|---|---|
| Objective Questions |
30 Questions |
1 Mark |
| Subjective Questions |
3/5 |
3 Marks |
| Analytical Questions |
6/6 |
4 Marks |
CGBSE 12th Marks Distribution and Weightage
CG board class 12th exam is held for a total of 100 marks. It must be noted that theory paper without practical is of 80 marks and internal assessment is held for 20 marks. Also, CGBSE 12th theory marks for practical subjects are 70. Check marks distribution and weigtage below
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