MHT CET PYQs for Order of Reaction with Solutions: Practice MHT CET Previous Year Questions

Order of Reaction is a topic from the Chemical Kinetics chapter of Class 12 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 Order of Reaction PYQs are:

Order from a rate law
Effect of changing concentrations on the rate
Order of radioactive decay

Practising Order of Reaction 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 Order of Reaction. The chapter recorded 3 questions across the 80 shifts in the data, and 2 of them came in the 2025 and 2026 papers, where it contributed about 0.1% per shift.

MHT CET Order of Reaction Chapter: Question Count, Marks and Weightage:

0.04 Average questions per shift (2018-2026)	2 Questions in the 2025 and 2026 papers (33 shifts)
3 Questions in the PDF (2024-2026)	0.1% Estimated Chemistry paper weightage (0.1% in 2025-2026)

The PDF holds 3 questions from MHT CET 2026 to 2024, newest first, each with its exam date and shift. Options are as printed and answer keys are not included.

Order of Reaction PYQ Statistics (2022-2026)

The table below shows the number of questions asked in MHT CET Order of Reaction 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	2	16	0.12	0.2%
2025	0	17	0.00	0.0%
2024	1	18	0.06	0.1%
2023	0	12	0.00	0.0%
2022	0	1	0.00	0.0%

The 2018 to 2021 papers in the PDF add 0 more questions: 2021 had none, 2020 had none, 2019 had none, 2018 had none.

MHT CET Order of Reaction Important Questions: Based on the Last 5 Years

The major types of questions asked from Order of Reaction in MHT CET cover the following topics:

Topic	Questions in the PDF	Questions in 2022-2026	Average per Shift (2022-2026)
Order from a rate law and the effect of changing concentrations	2	2	0.03
Order of radioactive decay	1	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 Order of Reaction PYQs

All 3 questions in this PDF are single-correct MCQs.

Question Style	What it Tests
Order from a rate law	The order of the decomposition of H₂O₂ when rate = k[H₂O₂]
Effect on the rate	A reaction first order in A, second order in B and zero order in C, and the effect of changing the concentrations
Radioactive decay	The order of radioactive decay of a substance

How to Use the Order of Reaction PYQ PDF for MHT CET

Start with the 2025 and 2026 papers first, because they hold 2 of the 3 questions.
Add the powers of the concentrations in the rate law to get the overall order, and remember that radioactive decay is first order.
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: Order of Reaction PYQs and MCQs

Source: Motion Education Deccan Pune

Order of Reaction PYQ for MHT CET Chemistry FAQs

Ques. How many questions come from Order of Reaction every year?

Ans. In this PDF, the questions are 2 from 2026 and 1 from 2024. In 2025 and 2026 together the chapter had 2 questions across 33 shifts, about 0.06 per shift.

Ques. Which topics are asked most frequently in MHT CET Order of Reaction?

Ans. Order from a rate law and the effect of changing concentrations is the largest group with 2 of the 3 questions, about 67%.

Ques. What kind of questions are asked from Order of Reaction?

Ans. Short MCQs that read the order from a rate law or ask for the effect of a change in concentration on the rate.

Ques. What is the best way to practise Order of Reaction PYQs?

Ans. First solve the 2025 and 2026 questions completely, then the older ones, and finally re-attempt the questions you got wrong.

Ques. Can I score full marks from Order of Reaction?

Ans. In 2025 and 2026 together the chapter had 2 questions across 33 shifts. Knowing how to read the order from a rate law is enough to secure it. Each Chemistry question in MHT CET is worth 1 mark.

Ques. Does the Order of Reaction PYQ PDF include solutions?

Ans. No. The PDF contains the questions with their exam date and shift, without answer keys or solutions.

MHT CET PYQs for Order of Reaction with Solutions: Practice MHT CET Previous Year Questions

Order of Reaction PYQ Statistics (2022-2026)

MHT CET Order of Reaction Important Questions: Based on the Last 5 Years

Pair PYQs with Other Study Material for MHT CET 2027

Question Style in MHT CET Order of Reaction PYQs

How to Use the Order of Reaction PYQ PDF for MHT CET

Video: Order of Reaction PYQs and MCQs

Order of Reaction PYQ for MHT CET Chemistry FAQs

1.
Identify correct statement regarding order of reaction from following.

2.
Which of the following reactions has of overall order \(1.5\) ?

4.
What is the order of the following reaction ?
\(2\text{H}_2\text{O}_2(l)\rightarrow 2\text{H}_2\text{O}(l)+\text{O}_2(g)\), if rate = \(k[\text{H}_2\text{O}_2]\)

5.
The rate constant of a reaction is \(k = 3.28\times 10^{-4}\) s\(^{-1}\). Find the order of the reaction.

6.
Identify a type of order of reaction that its unit of rate constant is mol dm\(^{-3}\)s\(^{-1}\) from the following.

7.
Which of the following is an example of fractional order reaction ?

8.
The rate law for the reaction \(A+B\rightarrow P\) is found to be rate \(= k[A]^2[B]\).
The rate constant of the reaction at 300 K is \(6.0 \text{M}^{-2}\text{s}^{-1}\). Calculate the rate of the reaction when \([A] = 1 \text{M}\) and \([B] = 0.2 \text{M}\)

9.
What is order of radioactive decay of a substance ?

10.
What is the value of the slope of a graph obtained by plotting the concentration of reactant \((A)_t\) versus time for zero order reaction?

11.
What is the order and molecularity of the following elementary reaction?
\(2\text{NO}_{2(g)}\rightarrow 2\text{NO}_{(g)}+\text{O}_{2(g)}\), rate \(= k\times [\text{NO}_2]^2\)

12.
The rate of the reaction \(2A+3B\rightarrow 2C+D\) is \(6\times 10^{-4}\text{ mol dm}^{-3}\text{ s}^{-1}\), when \([A] = [B] = 0.3\text{ mol dm}^{-3}\). If the reaction is of first order for A and zeroth order for B, then find the rate constant.

13.
Which of the following is an example of second order reaction ?

14.
Which of the following is an example of second order reaction?

15.
Half life of zero order reaction is 1 hour. If initial concentration of reactant is 2.0 mol \(\text{L}^{-1}\), find the time required to decrease concentration from 0.50 to 0.25 mol \(\text{L}^{-1}\)

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Order of Reaction PYQ Statistics (2022-2026)

MHT CET Order of Reaction Important Questions: Based on the Last 5 Years

Pair PYQs with Other Study Material for MHT CET 2027

Question Style in MHT CET Order of Reaction PYQs

How to Use the Order of Reaction PYQ PDF for MHT CET

Video: Order of Reaction PYQs and MCQs

Order of Reaction PYQ for MHT CET Chemistry FAQs

1.Identify correct statement regarding order of reaction from following.

2.Which of the following reactions has of overall order \(1.5\) ?

4.What is the order of the following reaction ?\(2\text{H}_2\text{O}_2(l)\rightarrow 2\text{H}_2\text{O}(l)+\text{O}_2(g)\), if rate = \(k[\text{H}_2\text{O}_2]\)

5.The rate constant of a reaction is \(k = 3.28\times 10^{-4}\) s\(^{-1}\). Find the order of the reaction.

6.Identify a type of order of reaction that its unit of rate constant is mol dm\(^{-3}\)s\(^{-1}\) from the following.

7.Which of the following is an example of fractional order reaction ?

8.The rate law for the reaction \(A+B\rightarrow P\) is found to be rate \(= k[A]^2[B]\).The rate constant of the reaction at 300 K is \(6.0 \text{M}^{-2}\text{s}^{-1}\). Calculate the rate of the reaction when \([A] = 1 \text{M}\) and \([B] = 0.2 \text{M}\)

9.What is order of radioactive decay of a substance ?

10.What is the value of the slope of a graph obtained by plotting the concentration of reactant \((A)_t\) versus time for zero order reaction?

11.What is the order and molecularity of the following elementary reaction?\(2\text{NO}_{2(g)}\rightarrow 2\text{NO}_{(g)}+\text{O}_{2(g)}\), rate \(= k\times [\text{NO}_2]^2\)

12.The rate of the reaction \(2A+3B\rightarrow 2C+D\) is \(6\times 10^{-4}\text{ mol dm}^{-3}\text{ s}^{-1}\), when \([A] = [B] = 0.3\text{ mol dm}^{-3}\). If the reaction is of first order for A and zeroth order for B, then find the rate constant.

13.Which of the following is an example of second order reaction ?

14.Which of the following is an example of second order reaction?

15.Half life of zero order reaction is 1 hour. If initial concentration of reactant is 2.0 mol \(\text{L}^{-1}\), find the time required to decrease concentration from 0.50 to 0.25 mol \(\text{L}^{-1}\)

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Identify correct statement regarding order of reaction from following.

2.
Which of the following reactions has of overall order \(1.5\) ?

4.
What is the order of the following reaction ?
\(2\text{H}_2\text{O}_2(l)\rightarrow 2\text{H}_2\text{O}(l)+\text{O}_2(g)\), if rate = \(k[\text{H}_2\text{O}_2]\)

5.
The rate constant of a reaction is \(k = 3.28\times 10^{-4}\) s\(^{-1}\). Find the order of the reaction.

6.
Identify a type of order of reaction that its unit of rate constant is mol dm\(^{-3}\)s\(^{-1}\) from the following.

7.
Which of the following is an example of fractional order reaction ?

8.
The rate law for the reaction \(A+B\rightarrow P\) is found to be rate \(= k[A]^2[B]\).
The rate constant of the reaction at 300 K is \(6.0 \text{M}^{-2}\text{s}^{-1}\). Calculate the rate of the reaction when \([A] = 1 \text{M}\) and \([B] = 0.2 \text{M}\)

9.
What is order of radioactive decay of a substance ?

10.
What is the value of the slope of a graph obtained by plotting the concentration of reactant \((A)_t\) versus time for zero order reaction?

11.
What is the order and molecularity of the following elementary reaction?
\(2\text{NO}_{2(g)}\rightarrow 2\text{NO}_{(g)}+\text{O}_{2(g)}\), rate \(= k\times [\text{NO}_2]^2\)

12.
The rate of the reaction \(2A+3B\rightarrow 2C+D\) is \(6\times 10^{-4}\text{ mol dm}^{-3}\text{ s}^{-1}\), when \([A] = [B] = 0.3\text{ mol dm}^{-3}\). If the reaction is of first order for A and zeroth order for B, then find the rate constant.

13.
Which of the following is an example of second order reaction ?

14.
Which of the following is an example of second order reaction?

15.
Half life of zero order reaction is 1 hour. If initial concentration of reactant is 2.0 mol \(\text{L}^{-1}\), find the time required to decrease concentration from 0.50 to 0.25 mol \(\text{L}^{-1}\)