engineering

Graduate Aptitude Test in Engineering — Life Sciences

IIT Roorkee (2027) · Online (CBT) · Annual (February)

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GATE XL Syllabus

Complete chapter-wise syllabus covering all subjects. Updated as per official exam pattern.

Mole Concept

Mole Calculations, Empirical Formula, Limiting Reagent, Concentration Terms

Atomic Structure

Bohr's Model, Quantum Numbers, Electronic Configuration, Photoelectric Effect

Chemical Bonding

VSEPR Theory, Hybridization, Molecular Orbital Theory, Resonance

States of Matter

Ideal Gas Law, Kinetic Theory, Real Gases, Liquid State

Chemical Thermodynamics

Enthalpy, Entropy, Gibbs Free Energy, Hess's Law

Equilibrium

Chemical Equilibrium, Ionic Equilibrium, pH and Buffers, Solubility Product

Electrochemistry

Electrochemical Cells, Nernst Equation, Electrolysis, Conductance

Chemical Kinetics

Rate Laws, Order of Reaction, Arrhenius Equation, Half-Life

Solutions

Raoult's Law, Colligative Properties, Osmosis, van't Hoff Factor

p-Block Elements

Group 13-18 Elements, Oxoacids, Allotropes, Halides

d and f-Block Elements

Transition Metals, Magnetic Properties, Colour of Compounds, Lanthanoids

Coordination Compounds

IUPAC Nomenclature, Crystal Field Theory, Isomerism, Werner's Theory

General Organic Chemistry

IUPAC Naming, Reaction Intermediates, Inductive Effect, Resonance

Hydrocarbons

Alkanes, Alkenes, Alkynes, Aromatic Compounds

Haloalkanes and Haloarenes

SN1 and SN2, Elimination Reactions, Nucleophilic Substitution

Alcohols, Phenols and Ethers

Preparation, Chemical Reactions, Lucas Test, Kolbe's Reaction

Aldehydes, Ketones

Nucleophilic Addition, Aldol Condensation, Cannizzaro Reaction

Amines

Basicity Order, Diazonium Salts, Carbylamine Test, Azo Coupling

Biomolecules

Carbohydrates, Proteins, Nucleic Acids, Vitamins

About Graduate Aptitude Test in Engineering — Life Sciences (GATE XL) 2027

The Graduate Aptitude Test in Engineering — Life Sciences (GATE XL) is one of the most competitive entrance exams, conducted by the IIT Roorkee (2027). Preparing for the GATE XL requires systematic practice, conceptual clarity, and regular self-evaluation. Our platform offers dynamic mock tests, previous years' resolved papers, and AI-enabled analysis to help you secure a top rank.

Frequently Asked Questions

What optional sections are available in GATE XL 2027?

GATE XL has Chemistry (mandatory) plus 5 optional sections: Biochemistry (XL-P), Botany (XL-Q), Microbiology (XL-R), Zoology (XL-S), and Food Technology (XL-T). Candidates must choose any 2 optional sections.

Which GATE XL sections should biology graduates choose?

Biochemistry + Microbiology is the most popular combination for biotechnology careers. Botany + Zoology is ideal for ecology/environmental science. Food Technology can be chosen for agri-food industry careers.

Can GATE XL be used for IISc research admission?

Yes, IISc Bangalore accepts GATE XL for research programmes in Biological Sciences, Biochemistry, and related departments. GATE XL is also accepted by several IIT Biological Engineering departments.

What is the difference between GATE XL and CSIR NET Life Sciences?

GATE XL is primarily for MTech/research admission in engineering colleges. CSIR NET Life Sciences qualifies you for JRF (Junior Research Fellowship) and lectureship in basic sciences. Many students appear for both.

Is GATE XL Chemistry section hard?

The mandatory Chemistry section in GATE XL covers physical, organic, and inorganic chemistry at BSc level. It is typically 15 marks and is easier than GATE CY (full Chemistry paper). BSc Chemistry background is sufficient.

How to Prepare for GATE XL

1

Chemistry (mandatory 15 marks) covers BSc-level Physical, Organic, and Inorganic — a solid 3-4 week review is sufficient

2

Choose optional sections based on your BSc specialisation — depth matters more than breadth

3

Biochemistry section focuses on Metabolic Pathways, Enzyme Kinetics, and Protein Structures — use Lehninger/Berg as reference

4

General Aptitude (mandatory 15 marks) is straightforward — practise basic verbal and numerical reasoning daily

Key Dates

Next ExamFebruary 2027
RegistrationSeptember 2026
ModeOnline (CBT)
EligibilityBSc/BTech in Life Sciences, Biochemistry, Botany, Zoology, Microbiology, or related
AttemptsNo limit
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