MCHE-012 Solved Assignment 2026-27 in English | M.Sc Chemistry

The MCHE-012 Solved Assignment 2026-27 in English is prepared for students of the M.Sc Chemistry programme studying MCHE-012: Spectroscopic Identification of Organic Compounds. This digital PDF provides structured reference answers for the applicable assignment questions and supports organised assignment preparation.

MCHE-012 focuses on the use of spectroscopic techniques to identify and analyse organic compounds. The assignment covers UV spectroscopy, IR spectroscopy, ¹H NMR, ¹³C NMR, 2D NMR and mass spectrometry.

IGNOU’s July 2026 Common Prospectus lists MCHE-012 as Elective-II: Spectroscopic Identification of Organic Compounds, with 4 credits in the fourth semester of the M.Sc Chemistry programme.

The supplied Tutor Marked Assignment contains 10 questions and carries a maximum of 100 marks.

MCHE-012 Spectroscopic Identification of Organic Compounds Course Information

The official prospectus places MCHE-012 among the fourth-semester elective courses of MSCCHEM and assigns it 4 credits.

MCHE-012 Solved Assignment 2026-27 Overview

The MCHE-012 Solved Assignment 2026-27 in English begins with UV spectroscopy and explains how conjugation influences electronic transitions and absorption maxima. It also examines the effect of substituents on the UV spectra of carbonyl compounds.

The next questions connect UV and IR spectroscopy with structural identification. Students also need to predict λmax values and understand the basic principles of ¹H NMR spectroscopy.

NMR concepts form a major part of the assignment. The paper covers TMS, upfield and downfield signals, solvent effects, 2D NMR, COSY, broadband decoupling, off-resonance decoupling and HMQC.

The assignment then moves to COSY and HETCOR experiments, molecular ion and base peaks, ionisation methods and benzylic cleavage in mass spectrometry.

Finally, students study McLafferty rearrangement and learn how UV, IR, NMR and mass spectra collectively help identify the structure of an organic compound.

MCHE-012 Assignment Questions

Course Code: MCHE-012

Course Title: Spectroscopic Identification of Organic Compounds

Assignment Code: MCHE-012/TMA/2026

Maximum Marks: 100

Instruction: Attempt all the questions. The marks for each question are indicated against it.

Question 1

a) How does conjugation affect the electronic transitions in organic molecules? Explain its effect on absorption maxima with the help of an example. (5)

b) Describe the effect of substituent on the UV spectra of carbonyl compounds with the help of examples. (5)

Question 2

a) Differentiate between the given compounds on the basis of UV spectra. Explain your answer. (5)

b) Predict the expected UV and IR spectra of the given compound. (5)

Question 3

a) Predict the λmax values of the given compounds and explain your answer. (5)

b) Explain the basis of ¹H NMR spectroscopy. Which of the nuclei ¹²C, ²H and ¹⁹F is not NMR active and which is NMR active? Explain your answer. (5)

Question 4

a) Why is TMS used as a standard in NMR spectroscopy? Explain what upfield and downfield signify in an NMR spectrum. (5)

b) Explain the solvent effect in the simplification of complex spectra with a suitable example. (5)

Question 5

Interpret the NMR spectra of the given compounds. Give the expected δ values and explain your answer. (10)

Question 6

a) Write the principle of 2D NMR. How is it different from 1D NMR? (5)

b) List the benefits and limitations of COSY technique. (5)

Question 7

a) Describe the use of broadband decoupling and off-resonance decoupling in ¹³C NMR spectroscopy. (5)

b) Answer the following with respect to the HMQC experiment:

i) Its full form
ii) Its role in NMR
iii) The type of nuclei involved
iv) Type of spectrum obtained (5)

Question 8

a) Differentiate between COSY and HETCOR experiments in 2D NMR spectroscopy. (5)

b) What is meant by a base peak and a molecular ion peak in a mass spectrum? How is mass spectrometry used to find the mass of a compound? Explain. (5)

Question 9

a) Describe different ionisation methods involved in mass spectrometry. (5)

b) Describe the concept of cleavages, taking benzylic cleavages in mass spectrometry. (5)

Question 10

a) Explain McLafferty rearrangement with the help of a suitable example. (5)

b) What kind of information is available from UV, IR, NMR and Mass spectra of an organic compound? Explain with the help of an example. (5)

What Does This MCHE-012 Solved Assignment PDF Include?

The MCHE-012 Solved Assignment 2026-27 in English provides structured reference material for all questions in the supplied assignment.

The content covers conjugation, UV absorption, carbonyl spectroscopy and UV-based compound differentiation. It also includes IR interpretation and λmax prediction.

Furthermore, the material covers ¹H NMR, TMS, chemical shifts, solvent effects and NMR spectrum interpretation. The 2D NMR section includes COSY, HETCOR and HMQC techniques.

Mass spectrometry topics include molecular ion peaks, base peaks, ionisation methods, benzylic cleavage and McLafferty rearrangement. The assignment also explains how multiple spectroscopic techniques can work together for organic structure identification.

Key Features

• MCHE-012 Spectroscopic Identification of Organic Compounds
• 2026–27 assignment preparation
• English Medium
• Complete assignment question coverage
• Structured reference answers
• UV, IR, NMR and Mass Spectrometry topics
• Digital PDF format
• Instant download
• Mobile-friendly PDF
• Laptop and desktop compatible
• Useful for academic reference

Who Can Use the MCHE-012 Assignment?

The MCHE-012 Solved Assignment 2026-27 in English is intended for students studying MCHE-012 under the MSCCHEM programme.

MCHE-012 is an elective course in the fourth semester of the M.Sc Chemistry programme. The official prospectus lists it as Elective-II: Spectroscopic Identification of Organic Compounds with 4 credits.

Students should verify their course code, assignment session and medium before purchasing.

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Frequently Asked Questions

1. What is MCHE-012?

MCHE-012 is Spectroscopic Identification of Organic Compounds, an elective course in M.Sc Chemistry.

2. Which programme category should I select?

Select:

MSCCHEM

3. Which semester includes MCHE-012?

MCHE-012 belongs to the Fourth Semester.

4. How many credits does MCHE-012 carry?

MCHE-012 carries 4 credits.

5. What is the assignment code?

The supplied assignment gives the code as MCHE-012/TMA/2026.

6. How many marks does the assignment carry?

The assignment carries a maximum of 100 marks.

7. How many questions are included?

The assignment contains 10 questions.

8. What topics are covered?

The assignment covers UV, IR, ¹H NMR, ¹³C NMR, 2D NMR, COSY, HETCOR, HMQC and mass spectrometry.

9. Is this product available in English?

Yes. This product is prepared in English medium.

10. What format will I receive?

You will receive a digital PDF.

11. Can I access the PDF on mobile?

Yes. You can access the PDF on a smartphone, tablet, laptop or desktop computer.

Disclaimer

Mother Publication independently prepares this material for educational and reference purposes. Students should understand the content and prepare their assignments appropriately. Mother Publication is not affiliated with, endorsed by, or officially associated with IGNOU.

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