CHE-010 IGNOU Guess Paper 2026-27

CHE-010 Guess Paper 2026-27: Term-End Exam (TEE) Preparation Guide

This structured guess paper aligns with the latest IGNOU CHE-010 syllabus, incorporating solved previous year questions (2017–2026) and chapter-wise weightage trends. Optimized for 3-hour exam time management, it prioritizes high-scoring topics and common question patterns.

Key Syllabus Blocks for CHE-010 (Chemistry)

• Valence Bond Theory and Hybridization (sp, sp², sp³, dsp², d²sp³)
• Molecular Orbital Theory (HOMO-LUMO interactions, π-bonding in conjugated systems)
• VSEPR Theory and Geometrical Isomerism (Stereochemistry)

• SN1 vs. SN2 vs. E1 vs. E2 Mechanisms (Nucleophilic Substitution & Elimination)
• Arrhenius and Collision Theories (Rate Laws, Activation Energy)
• Catalysis (Homogeneous vs. Heterogeneous, Enzyme-like models)

• First Law (ΔU = q + w), Second Law (Gibbs Free Energy: ΔG = ΔH TΔS)
• Nernst Equation, Electrochemical Cells (Standard Reduction Potentials)
• Thermodynamic Equilibria (Le Chatelier’s Principle)

• Electrophilic Aromatic Substitution (Mechanism, Regioselectivity)
• Free Radical Reactions (Halogenation, Polymerization)
• Pericyclic Reactions (Diels-Alder, Retro-Diels-Alder)

• Valency and Oxidation States (IUPAC Nomenclature)
• Crystal Field Theory (CFSE, Color in Coordination Compounds)
• Band Theory (Metals, Semiconductors, Insulators)

Exam Time Management Tips

• Allocate 45 minutes for numerical problems (Thermodynamics/Electrochemistry).
• Spend 20 minutes on reaction mechanism diagrams (SN1/SN2/E1/E2).
• Prioritize stereochemistry questions (R/S, E/Z isomers) for quick marks.

Frequently Asked Questions (FAQs)

Yes. Previous TEE papers (2017–2026) show 30–40% of marks are allocated to numericals on Gibbs Free Energy, Nernst Equation, and Le Chatelier’s Principle.

Draw stepwise mechanisms with electron-pushing arrows. Focus on regioselectivity (e.g., Friedel-Crafts vs. Hofmann elimination) and stereochemical outcomes (e.g., SN2 inversion).