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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.

18Papers
18Years
119Questions
1Topics

Chemical Reaction Engineering question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Chemical Reaction Engineering. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 71 59.7%
Easy 38 31.9%
Hard 10 8.4%

Question type distribution

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

MCQ 74 62.2%
Numerical Answer Type (NAT) 35 29.4%
Fill in the blanks 7 5.9%
MSQ 3 2.5%

Subject weightage

Top subjects by unique question coverage.

Chemical Engineering
119 Qs

Most asked topics

Top topics across the included previous year papers.

Chemical Reaction Engineering
119 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Reaction Kinetics and Ideal Reactors
81 Qs
Heterogeneous Catalysis and Diffusion
22 Qs
Non-ideal and Non-isothermal Reactors
14 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) 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
6 Qs
Chemical Engineering (CH) 2007
3 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.

81 questions18 papers18 years

Heterogeneous Catalysis and Diffusion

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

22 questions17 papers17 years

Non-ideal and Non-isothermal Reactors

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

14 questions11 papers11 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. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Chemical Engineering (CH) 202620269View paper
Chemical Engineering (CH) 202520258View paper
Chemical Engineering (CH) 202420249View paper
Chemical Engineering (CH) 202320235View paper
Chemical Engineering (CH) 202220223View paper
Chemical Engineering (CH) 202120215View paper
Chemical Engineering (CH) 2020202011View paper
Chemical Engineering (CH) 201920197View paper
Chemical Engineering (CH) 201820186View paper
Chemical Engineering (CH) 201720177View paper
Chemical Engineering (CH) 201420146View paper
Chemical Engineering (CH) 201320138View paper
Chemical Engineering (CH) 201220127View paper
Chemical Engineering (CH) 201120116View paper
Chemical Engineering (CH) 201020105View paper
Chemical Engineering (CH) 200920098View paper
Chemical Engineering (CH) 200820086View paper
Chemical Engineering (CH) 200720073View paper

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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