IGNOU CHE-10 Previous Year Question Papers – Download TEE Papers
About IGNOU CHE-10 – SPECTROSCOPY
Spectroscopy is a specialized branch of physical chemistry that focuses on the interaction between electromagnetic radiation and matter to determine molecular structures. This course is designed for undergraduate science students to provide a deep understanding of how different regions of the electromagnetic spectrum provide unique data about atomic and molecular transitions.
What CHE-10 Covers — Key Themes for the Exam
Analyzing the recurring topics in the Term End Examination (TEE) is the most effective strategy for mastering this complex chemistry course. By reviewing the past papers, students can identify which mathematical derivations and spectral interpretations are favored by the examiners. Understanding these themes ensures that your preparation is targeted toward the most high-weightage areas of the spectroscopy syllabus.
- Rotational Spectroscopy (Microwave) — Examiners frequently test the selection rules and the calculation of bond lengths from rotational constants. You must understand the rigid rotor model and how isotopic substitution affects the spacing between rotational energy levels in diatomic molecules.
- Vibrational Spectroscopy (Infrared) — This theme focuses on the harmonic and anharmonic oscillator models, where students are often asked to calculate force constants. Examiners look for a clear understanding of fundamental vibrations, overtones, and the specific IR active modes required for identifying functional groups in molecules.
- Electronic Spectroscopy (UV-Visible) — Significant focus is placed on the Beer-Lambert law and the various types of electronic transitions like sigma to sigma star or pi to pi star. Questions often revolve around chromophores, auxochromes, and the factors that cause bathochromic or hypsochromic shifts in absorption maximum.
- Nuclear Magnetic Resonance (NMR) — This is a critical recurring theme where examiners test the concepts of chemical shift, shielding, and deshielding effects. Students are typically required to interpret 1H-NMR spectra to deduce the structure of simple organic molecules based on signal splitting and integration.
- Raman Spectroscopy — The distinction between Raman and IR spectroscopy is a common exam favorite, specifically the mutual exclusion principle. Examiners test the quantum and classical theories of the Raman effect, focusing on the polarizability change required for a molecule to be Raman active.
- Mass Spectrometry and ESR — While technically different from absorption spectroscopy, these sections cover fragmentation patterns and electron spin transitions. Questions often ask for the identification of molecular ion peaks or the number of lines in an ESR spectrum for radicals like the methyl or benzene radical.
By mapping these past papers to the specific blocks in your study material, you can see a clear trend in how theoretical concepts are transformed into numerical problems. Focusing on these six themes will cover approximately 80% of the repetitive content found in the annual examinations.
Introduction
Preparing for the Term End Examination requires more than just reading textbooks; it demands a strategic look at how questions are framed. Utilizing IGNOU CHE-10 Previous Year Question Papers allows students to familiarize themselves with the language used by paper setters and the depth required for each answer. These past papers serve as a diagnostic tool to identify your strengths and weaknesses in the various spectroscopic techniques covered in the syllabus.
The exam pattern for this course usually balances theoretical explanations with numerical applications and spectral analysis. By solving these papers, you can practice the specific derivations for energy levels and learn how to present your answers logically. Consistent practice with the TEE papers builds the necessary confidence to tackle complex problems under the strict three-hour time limit of the final examination session.
IGNOU CHE-10 Previous Year Question Papers
| Year | June TEE | December TEE |
|---|---|---|
| 2024 | Download | Download |
| 2023 | Download | Download |
| 2022 | Download | Download |
| 2021 | Download | Download |
| 2020 | Download | Download |
| 2019 | Download | Download |
| 2018 | Download | Download |
| 2017 | Download | Download |
| 2016 | Download | Download |
| 2015 | Download | Download |
| 2014 | Download | Download |
| 2013 | Download | Download |
| 2012 | Download | Download |
| 2011 | Download | Download |
| 2010 | Download | Download |
Download CHE-10 Question Papers December 2024 Onwards
IGNOU CHE-10 Question Papers — December 2024
| # | Course | TEE Session | Download |
|---|---|---|---|
| 1 | CHE-10 | Dec 2024 | Download |
→ Download All December 2024 Question Papers
IGNOU CHE-10 Question Papers — June 2025
| # | Course | TEE Session | Download |
|---|---|---|---|
| 1 | CHE-10 | June 2025 | Download |
→ Download All June 2025 Question Papers
How Past Papers Help You Score Better in TEE
Exam Pattern
The CHE-10 exam is usually worth 50 marks with a 2-hour duration. It features a mix of descriptive questions, derivations, and problem-solving exercises across all spectroscopy types.
Important Topics
High-frequency topics include the determination of bond lengths in rotational spectra and the interpretation of chemical shifts and splitting in NMR spectroscopy.
Answer Writing
Use clear diagrams for transitions and energy levels. Always provide units for physical constants and explicitly state the selection rules for each spectroscopic method discussed.
Time Management
Allocate 40 minutes to major derivations, 40 minutes to spectral interpretation/numericals, and 40 minutes for short notes and comparative questions between IR and Raman.
Important Note for Students
⚠️ Question papers for the upcoming 2026 session will be updated
here after IGNOU releases them. Always cross-reference with the latest syllabus
at ignou.ac.in. Past papers work best alongside the official IGNOU study blocks,
not as a replacement for them.
Also Read
More resources for CHE-10 preparation:
FAQs – IGNOU CHE-10 Previous Year Question Papers
Legal & Academic Disclaimer
This page does not claim ownership of any paper. All links redirect to official
IGNOU repositories. Content is for academic reference only — verify authenticity
at ignou.ac.in.
Official IGNOU Links
Join IGNOUED Community
Official IGNOU updates, admissions, assignments, results and guidance.
✔ Last updated: April 2026
