JEE Main Important Chemistry formulas
As per latest syllabus. Chemistry formulas, equations, & laws of class 11 & 12th chapters
The Central Board of Secondary Education (CBSE) has concluded the board examination for CBSE class 10 and CBSE class 12 exams. Lakhs of students appeared in the CBSE board exam. To ensure a fair implementation of the examination, the board uses different sets of question papers. It is to maintain fairness and prevent any malpractice during the examination. It helps the board to prevent any chance of the paper leaking. The board publishes 15 sets, which include 5 major sets, and each will be further divided into 3 subsets.
The questions in major sets will be different from one another, while questions in subsets will be the same but in a different order. To perform better and score passing marks in the CBSE results, students can solve previous years’ CBSE board sample papers. It will help them familiarise themselves with the variety of questions that are asked in the exam and improve their problem-solving skills. Below, we have provided more information on the CBSE board exam sets for students' information.
The board prepares the CBSE question paper for classes 10 and 12 in multiple sets to maintain fairness in the examination and prevent cheating. Each CBSE board exam set contains different questions, but the level of difficulty and the distribution of marks remain the same. The set number should not matter as long as students are familiar with the CBSE syllabus and have prepared well for the examination.
Last year, the CBSE board released a total of 15 sets of question papers for each subject, including Science, Social Science, Hindi, etc. These sets were labelled as Set 1, Set 2, Set 3, Set 4 and Set 5. Each major set comes with 3 subsets. Most questions in each subset are usually the same, but arranged differently or phrased slightly differently.
| Subject | Number of sets | Number of subsets |
|---|---|---|
Hindi | 5 | 3 |
English | 5 | 3 |
Mathematics | 5 | 3 |
Science | 5 | 3 |
Social Science | 5 | 3 |
| Subjects | Number of sets | Number of subsets |
|---|---|---|
Hindi | 5 | 3 |
English | 5 | 3 |
Mathematics | 5 | 3 |
Accountancy | 5 | 3 |
Business Studies | 5 | 3 |
Economics | 5 | 3 |
Geography | 5 | 3 |
History | 5 | 3 |
Political Science | 5 | 3 |
Biology | 5 major sets and 1 set B for VI candidates | 3 |
Chemistry | 5 major sets and 1 set B for VI candidates | 3 |
Physics | 5 major sets and 1 set B for VI candidates | 3 |
Note: VI stands for Visually Impaired candidates.
Multiple sets ensure that no particular group of students have access to the same questions. It promotes fairness in the examination and helps avoid unnecessary circumstances.
It also reduces the risk of question paper leaks before the exam and cheating during the exam.
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Frequently Asked Questions (FAQs)
The CBSE board publishes three sets of question papers for each subject.
No, the set number will not affect the student’s performance as long as they are well prepared for the examination.
The multiple sets ensure fairness in the examination, enhance the security of the exam process and help avoid unnecessary circumstances such as risk of question paper leaks and cheating.
On Question asked by student community
Hi Fahima,
You can download the CBSE class 10th sample question paper
https://school.careers360.com/boards/cbse/cbse-class-10-english-sample-papers
Please let us know for more resources
Hello students,
The CBSE Class 10 Question Papers 2026 are available subject-wise, including Maths, Science, English, Hindi and Social Science, along with answer keys. You can download them from the link below.
https://school.careers360.com/boards/cbse/cbse-class-10-question-paper-2026
Dear Student,
The Central Board of Secondary Education (CBSE) has announced the CBSE Class 10 second board result marksheet 2026 on July 18, 2026. If you have appeared in the CBSE improvement exam, you will receive a single document that serves as both a marksheet and a passing certificate for
Hello Shivani
The CBSE Class 10 2027 question papers will be available after the 2027 board examinations. Meanwhile, you can practise using the previous year's question papers provided below.
https://school.careers360.com/boards/cbse/cbse-previous-year-question-papers-class-10
Hope it helps.
Hello students! You can refer to the link below to access the CBSE Class 10 Home Science Sample Paper 2025–26 along with the marking scheme.
https://school.careers360.com/download/ebooks/cbse-class-10-home-science-sample-paper-solution-2025-26
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