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Previous year question hub

Structure-Reactivity Correlations and Organic Reaction Mechanisms - Life Sciences Previous Year Questions

Practice Structure-Reactivity Correlations and Organic Reaction Mechanisms - Life Sciences previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

19Papers
19Years
81Questions
1Topics

Structure-Reactivity Correlations and Organic Reaction Mechanisms question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Structure-Reactivity Correlations and Organic Reaction Mechanisms. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Medium 64 79%
Hard 9 11.1%
Easy 8 9.9%

Question type distribution

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

MCQ 65 80.2%
MSQ 9 11.1%
Numerical Answer Type (NAT) 7 8.6%

Subject weightage

Top subjects by unique question coverage.

Life Sciences
81 Qs

Most asked topics

Top topics across the included previous year papers.

Structure-Reactivity Correlations and Organic Reaction Mechanisms
81 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Substitution, Elimination and Addition Reactions
45 Qs
Electronic Effects, Stereochemistry and Aromaticity
31 Qs
Organic Reagents and Functional-group Tests
5 Qs

Paper coverage

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

Life Sciences (XL) 2026
2 Qs
Life Sciences (XL) 2025
3 Qs
Life Sciences (XL) 2024
5 Qs
Life Sciences (XL) 2023
5 Qs
Life Sciences (XL) 2022
3 Qs
Life Sciences (XL) 2021
3 Qs
Life Sciences (XL) 2020
1 Qs
Life Sciences (XL) 2019
6 Qs
Life Sciences (XL) 2018
5 Qs
Life Sciences (XL) 2017
5 Qs
Life Sciences (XL) 2016
3 Qs
Life Sciences (XL) 2014
2 Qs
Life Sciences (XL) 2013
2 Qs
Life Sciences (XL) 2012
4 Qs
Life Sciences (XL) 2011
4 Qs
Life Sciences (XL) 2010
4 Qs
Life Sciences (XL) 2009
6 Qs
Life Sciences (XL) 2008
9 Qs
Life Sciences (XL) 2007
9 Qs

Browse by subtopics

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

Substitution, Elimination and Addition Reactions

Explore previous-paper coverage, trends and focused practice for Substitution, Elimination and Addition Reactions.

45 questions18 papers18 years

Electronic Effects, Stereochemistry and Aromaticity

Explore previous-paper coverage, trends and focused practice for Electronic Effects, Stereochemistry and Aromaticity.

31 questions18 papers18 years

Organic Reagents and Functional-group Tests

Explore previous-paper coverage, trends and focused practice for Organic Reagents and Functional-group Tests.

5 questions5 papers5 years

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Life Sciences (XL) 202620262View paper
Life Sciences (XL) 202520253View paper
Life Sciences (XL) 202420245View paper
Life Sciences (XL) 202320235View paper
Life Sciences (XL) 202220223View paper
Life Sciences (XL) 202120213View paper
Life Sciences (XL) 202020201View paper
Life Sciences (XL) 201920196View paper
Life Sciences (XL) 201820185View paper
Life Sciences (XL) 201720175View paper
Life Sciences (XL) 201620163View paper
Life Sciences (XL) 201420142View paper
Life Sciences (XL) 201320132View paper
Life Sciences (XL) 201220124View paper
Life Sciences (XL) 201120114View paper
Life Sciences (XL) 201020104View paper
Life Sciences (XL) 200920096View paper
Life Sciences (XL) 200820089View paper
Life Sciences (XL) 200720079View paper

Sample previous year questions

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

1
2007 · Life Sciences · Structure-Reactivity Correlations and Organic Reaction Mechanisms · Substitution, Elimination and Addition Reactions
Life Sciences (XL) 2007
The product ‘P’ formed in the following reaction is
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2
2008 · Life Sciences · Structure-Reactivity Correlations and Organic Reaction Mechanisms · Electronic Effects, Stereochemistry and Aromaticity
Life Sciences (XL) 2008

Among the following four amines, which one is least basic in aqueous solution?

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3
2009 · Life Sciences · Structure-Reactivity Correlations and Organic Reaction Mechanisms · Electronic Effects, Stereochemistry and Aromaticity
Life Sciences (XL) 2009

The most stable carbocation among the following is

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4
2010 · Life Sciences · Structure-Reactivity Correlations and Organic Reaction Mechanisms · Electronic Effects, Stereochemistry and Aromaticity
Life Sciences (XL) 2010

Among heptan-1-ol, heptan-2-ol, heptan-3-ol and heptan-4-ol, compounds those exhibit optical activity are

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5
2011 · Life Sciences · Structure-Reactivity Correlations and Organic Reaction Mechanisms · Electronic Effects, Stereochemistry and Aromaticity
Life Sciences (XL) 2011
Electrophile among the following is
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6
2012 · Life Sciences · Structure-Reactivity Correlations and Organic Reaction Mechanisms · Substitution, Elimination and Addition Reactions
Life Sciences (XL) 2012
It is due to
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