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Previous year question hub

Chemical Reaction Engineering - Chemical Engineering Previous Year Questions

Practice Chemical Reaction Engineering - Chemical Engineering previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

19Papers
19Years
142Questions
1Topics

Chemical Reaction Engineering question pattern

Every graph below is calculated only from this selection.

Questions by year

Compare question counts across years.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 90 63.4%
Easy 42 29.6%
Hard 10 7%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 93 65.5%
Numerical Answer Type (NAT) 39 27.5%
Fill in the blanks 7 4.9%
MSQ 3 2.1%

Subject weightage

Top subjects by unique question coverage.

Chemical Engineering
142 Qs

Most asked topics

Top topics across the included previous year papers.

Chemical Reaction Engineering
142 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Reaction Kinetics and Ideal Reactors
97 Qs
Heterogeneous Catalysis and Diffusion
26 Qs
Non-ideal and Non-isothermal Reactors
17 Qs
Enzyme Kinetics
2 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Chemical Engineering (CH) 2026
9 Qs
Chemical Engineering (CH) 2025
8 Qs
Chemical Engineering (CH) 2024
9 Qs
Chemical Engineering (CH) 2023
5 Qs
Chemical Engineering (CH) 2022
3 Qs
Chemical Engineering (CH) 2021
5 Qs
Chemical Engineering (CH) 2020
11 Qs
Chemical Engineering (CH) 2019
7 Qs
Chemical Engineering (CH) 2018
6 Qs
Chemical Engineering (CH) 2017
7 Qs
Chemical Engineering (CH) 2016
6 Qs
Chemical Engineering (CH) 2014
6 Qs
Chemical Engineering (CH) 2013
8 Qs
Chemical Engineering (CH) 2012
7 Qs
Chemical Engineering (CH) 2011
6 Qs
Chemical Engineering (CH) 2010
5 Qs
Chemical Engineering (CH) 2009
8 Qs
Chemical Engineering (CH) 2008
15 Qs
Chemical Engineering (CH) 2007
11 Qs

Browse by subtopics

Open a focused page built from the same verified paper data.

Reaction Kinetics and Ideal Reactors

Explore previous-paper coverage, trends and focused practice for Reaction Kinetics and Ideal Reactors.

97 questions19 papers19 years

Heterogeneous Catalysis and Diffusion

Explore previous-paper coverage, trends and focused practice for Heterogeneous Catalysis and Diffusion.

26 questions19 papers19 years

Non-ideal and Non-isothermal Reactors

Explore previous-paper coverage, trends and focused practice for Non-ideal and Non-isothermal Reactors.

17 questions14 papers14 years

Enzyme Kinetics

Explore previous-paper coverage, trends and focused practice for Enzyme Kinetics.

2 questions2 papers2 years

Included previous year papers

Newest papers appear first. Search these papers or sort by year and name.

Paper nameYearPDFAttempt
Chemical Engineering (CH) 20262026
9 questions in this view		2026
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20252025
8 questions in this view		2025
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20242024
9 questions in this view		2024
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20232023
5 questions in this view		2023
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20222022
3 questions in this view		2022
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20212021
5 questions in this view		2021
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20202020
11 questions in this view		2020
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20192019
7 questions in this view		2019
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20182018
6 questions in this view		2018
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20172017
7 questions in this view		2017
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20162016
6 questions in this view		2016
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20142014
6 questions in this view		2014
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Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20132013
8 questions in this view		2013
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20122012
7 questions in this view		2012
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20112011
6 questions in this view		2011
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20102010
5 questions in this view		2010
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ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20092009
8 questions in this view		2009
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ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20082008
15 questions in this view		2008
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ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download
Chemical Engineering (CH) 20072007
11 questions in this view		2007
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ExamElite solutions
Official documents
Official question paperOriginal authority-issued PDF Official Download

Sample previous year questions

A varied preview from the papers represented in this selection, with every available option.

1
2007 · Chemical Engineering · Chemical Reaction Engineering · Reaction Kinetics and Ideal Reactors
Chemical Engineering (CH) 2007
Vapor phase hydration of C2H4 to ethanol by the following reaction
C2H4 (g) + H2O (g) ↔ C2H5OH (g)
attains equilibrium at 400 K and 3 bar. The standard Gibbs free energy change of reaction at these conditions is ΔG° = 4000 J/mol. For 2 moles of an equimolar feed of ethylene and steam, the equation in terms of the extent of reaction ε (in mols) at equilibrium is
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2
2008 · Chemical Engineering · Chemical Reaction Engineering · Heterogeneous Catalysis and Diffusion
Chemical Engineering (CH) 2008
A species \( A \) reacts on a solid catalyst to produce \( R \) and \( S \) as follows:
1) \( A \rightarrow R \)    \( r_R = k_1 C_A^2 \)
2) \( A \rightarrow S \)    \( r_S = k_2 C_A^2 \)
Assume film resistance to mass transfer is negligible. The ratio of instantaneous fractional yield of \( R \) in the presence of pore diffusion to that in the absence of pore diffusion is
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3
2009 · Chemical Engineering · Chemical Reaction Engineering · Reaction Kinetics and Ideal Reactors
Chemical Engineering (CH) 2009
For a homogeneous reaction system, where
\( C_j \) is the concentration of \( j \) at time \( t \)
\( N_j \) is the number of moles of \( j \) at time \( t \)
\( V \) is the reaction volume at time \( t \)
\( t \) is the reaction time
The rate of reaction for species \( j \) is defined as
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4
2010 · Chemical Engineering · Chemical Reaction Engineering · Heterogeneous Catalysis and Diffusion
Chemical Engineering (CH) 2010
For a first order isothermal catalytic reaction, \( A \rightarrow P \), occurring in an infinitely long cylindrical pore, the relationship between effectiveness factor, \( \varepsilon \), and Thiele modulus, \( \phi \), is
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5
2011 · Chemical Engineering · Chemical Reaction Engineering · Heterogeneous Catalysis and Diffusion
Chemical Engineering (CH) 2011
Consider an irreversible, solid catalysed, liquid phase first order reaction. The diffusion and the reaction resistances are comparable. The overall rate constant (\(k_o\)) is related to the overall mass transfer coefficient (\(k_m\)) and the reaction rate constant (\(k\)) as
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6
2012 · Chemical Engineering · Chemical Reaction Engineering · Reaction Kinetics and Ideal Reactors
Chemical Engineering (CH) 2012
For an exothermic reversible reaction, which one of the following correctly describes the dependence of the equilibrium constant ( \( K \) ) with temperature ( \( T \) ) and pressure ( \( P \) )?
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