Laws of Chemical Combination is a topic from the Some Basic Concepts of Chemistry chapter of Class 11 Chemistry, and it is part of the Chemistry section of the MHT CET for candidates who are preparing for the PCM (Physics, Chemistry, and Mathematics).
The key topics covered in Laws of Chemical Combination PYQs are:
- Law of conservation of mass
- Law of constant proportions
- Law of multiple proportions
- Average atomic mass from isotopes
Practising Laws of Chemical Combination MHT CET PYQ helps candidates to understand question pattern, improve calculation speed, and identify concepts which were asked in previous exams.
Based on chapter-wise analysis of the MHT CET Chemistry paper, you can get less than 1 mark per paper by covering Laws of Chemical Combination. The chapter recorded 6 questions across the 80 shifts in the data, and none of them came in the 2025 and 2026 papers.
MHT CET Laws of Chemical Combination Chapter: Question Count, Marks and Weightage:
| 0.07 Average questions per shift (2018-2026) | 0 Questions in the 2025 and 2026 papers (33 shifts) |
| 6 Questions in the PDF (2019-2024) | 0.1% Estimated Chemistry paper weightage (0.0% in 2025-2026) |
The PDF holds 6 questions from MHT CET 2024 to 2019, newest first, each with its exam date and shift. Options are as printed and answer keys are not included.
Laws of Chemical Combination PYQ Statistics (2022-2026)
The table below shows the number of questions asked in MHT CET Laws of Chemical Combination PYQs. Every shift has 50 Chemistry questions, so the last column is the average per shift divided by 50.
| Year | Total Questions (across shifts) | Shifts in the Data | Average per Shift | Weightage (out of 50 Chemistry Qs) |
|---|---|---|---|---|
| 2026 | 0 | 16 | 0.00 | 0.0% |
| 2025 | 0 | 17 | 0.00 | 0.0% |
| 2024 | 3 | 18 | 0.17 | 0.3% |
| 2023 | 0 | 12 | 0.00 | 0.0% |
| 2022 | 0 | 1 | 0.00 | 0.0% |
The 2018 to 2021 papers in the PDF add 3 more questions: 2021 had 2, 2020 had none, 2019 had 1, 2018 had none.
MHT CET Laws of Chemical Combination Important Questions: Based on the Last 5 Years
The major types of questions asked from Laws of Chemical Combination in MHT CET cover the following topics:
| Topic | Questions in the PDF | Questions in 2022-2026 | Average per Shift (2022-2026) |
|---|---|---|---|
| Naming the law from a statement or from combining ratios | 4 | 2 | 0.03 |
| Average atomic mass and the diagonal relationship | 2 | 1 | 0.02 |
Pair PYQs with Other Study Material for MHT CET 2027
Click on the link to practise problems and time management skills:
| Resource | Link |
|---|---|
| MHT CET Sample Paper | Check Here |
| MHT CET Mock Test | Check Here |
Question Style in MHT CET Laws of Chemical Combination PYQs
All 6 questions in this PDF are single-correct MCQs. Four ask which law a statement or an example illustrates.
| Question Style | What it Tests |
|---|---|
| Which law | H₂O and H₂O₂ formed from the same two elements, combining ratios of hydrogen and oxygen of 1 : 8 and 1 : 16, and the statement that a compound always contains the same proportion of elements |
| Conservation of mass | The statement that mass can neither be created nor destroyed |
| Isotopes | The percentage abundance of the two isotopes of chlorine, Cl-35 and Cl-37, when the average atomic mass is 35.5 |
| Periodic table | The element that shows a diagonal relationship with lithium |
How to Use the Laws of Chemical Combination PYQ PDF for MHT CET
- Start with the newest papers in the PDF, 2024 first, because the chapter had no question in 2025 and 2026.
- Learn one example for each law: conservation of mass, constant proportions and multiple proportions with H₂O and H₂O₂.
- For average atomic mass, multiply each isotopic mass by its abundance and add.
- Solve year-wise PYQs by timing yourself, as time management is crucial.
- Re-attempt only the questions you got wrong, and note which formula or step you missed.
Video: Laws of Chemical Combination PYQs and MCQs
Source: PW MHT CET
Laws of Chemical Combination PYQ for MHT CET Chemistry FAQs
Ques. How many questions come from Laws of Chemical Combination every year?
Ans. In this PDF, the questions are 3 from 2024, 2 from 2021 and 1 from 2019. In 2025 and 2026 together the chapter had 0 questions across 33 shifts, about 0.00 per shift.
Ques. Which topics are asked most frequently in MHT CET Laws of Chemical Combination?
Ans. Naming the law from a statement or from combining ratios is the largest group with 4 of the 6 questions, about 67%.
Ques. What kind of questions are asked from Laws of Chemical Combination?
Ans. Short single-correct MCQs asking which law of chemical combination a statement or example illustrates, plus one calculation of isotopic abundance.
Ques. What is the best way to practise Laws of Chemical Combination PYQs?
Ans. Solve the questions from the newest paper first, then the older ones, and finally re-attempt the questions you got wrong.
Ques. Can I score full marks from Laws of Chemical Combination?
Ans. The chapter had no questions in the 2025 and 2026 papers. Learning the three laws with one example each is enough to secure it. Each Chemistry question in MHT CET is worth 1 mark.
Ques. Does the Laws of Chemical Combination PYQ PDF include solutions?
Ans. No. The PDF contains the questions with their exam date and shift, without answer keys or solutions.
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