IGNOU MSCCHEM MCH 12 STEREOCHEMISTRY AND REACTIVE INTERMEDIATES Solved Assignment ENGLISH
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MCH 12: STEREOCHEMISTRY AND REACTIVE INTERMEDIATES
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| Title Name | IGNOU MSCCHEM MCH 12 STEREOCHEMISTRY AND REACTIVE INTERMEDIATES Solved Assignment ENGLISH |
|---|---|
| Type | Soft Copy (E-Assignment) .pdf |
| University | IGNOU |
| Degree | MASTER DEGREE PROGRAMMES |
| Course Code | MSCCHEM |
| Course Name | M.Sc. in Chemistry |
| Subject Code | MCH 12 |
| Subject Name | STEREOCHEMISTRY AND REACTIVE INTERMEDIATES |
| Year | 2025 2026 |
| Session | - |
| Language | ENGLISH |
| Assignment Code | MCH 12/Assignment-1/2025 2026 |
| Product Description | Assignment of MSCCHEM (M.Sc. in Chemistry) 2025 2026. Latest MCH 012 2025-26 Solved Assignment Solutions |
| Format | Ready-to-Print PDF (.soft copy) |
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MCH 012 (January - 2025) - ENGLISH
Tutor Marked Assignment
Organic Chemistry-I
Course Code: MCH-012
Assignment Code: MCH-012/TMA/2025-26
Maximum Marks: 100
Note: Attempt all the questions. The marks for each question are indicated against it.
1. Carry out the following conversions as indicated.
a) Fischer form given on the right side to:
i) Staggered and Eclipsed Sawhorse forms
ii) Staggered and Eclipsed Newman forms
b) Flying wedge form to Fischer forms
3. a) List the properties of diastereomers. Indicate whether the following are enantiomers or diastereomers.
b)
How are disubstituted cyclohexanes different from monosubstituted cyclohexanes with reference to the isomerism? Draw the two chair conformations for each of the following disubstituted cyclohexanes. Draw also the cis and trans isomers and indicate the more stable isomer.
i) cis-Bromo-1-methylcyclohexane
ii) trans-2-Butyl-1-isopropylcyclohexane
iii) cis-4-Ethyl-1-hydroxycyclohexane
4.
a) What are the advantages and limitations of method of quasi-racemates?
b) What is pseudoasymmetry? Explain with the help of a suitable example.
5.
a) Briefly explain conformationally rigid systems and conformationally mobile diostereomers giving one example for each. Also correlate the reactivity and the conformations of these examples.
b) What are left- and right- circularly polarised lights? Draw suitable diagrams for them.
6. a) Give any two applications of ORD and CD.
b) What is the principle of microscopic reversibility? Explain taking the example of an addition-elimination reaction or a nucleophilic substitution reaction.
7. a) Select the resonance stabilised cation and give reason for your answer.
b) Write the product formed and give the mechanism.
8. a) Does a carbanion behave as an acid or a base? Explain the stability of carbanion on the basis of this behaviour?
b) Arrange the following anions in the decreasing order of stability.
9. a) Predict the product and write the mechanism.
b) Arrange the following radicals in their increase order of stability and give the reason of your answer.
10. Write the products formed in each of the following and give the mechanism.
MCH 12 2025 - English
Tutor Marked Assignment
Stereochemistry and Reactive Intermediates (MCH-012)
Course Code: MCH-012
Assignment Code: MCH-012/TMA/2025
Maximum Marks: 100
Note: Attempt all the questions. The marks for each question are indicated against it.
1. Carry out the following conversions as indicated.
a) Fischer form to: i) Staggered and Eclipsed Sawhorse forms and
ii) Staggered and Eclipsed Newman forms
b) Flying wedge form to Fischer forms
2. a) Suppose that there is a mixture having a specific rotation of +75o and an enantiomeric excess of 60%. Find out the enantiomeric composition of the mixture.
b) Draw the meso isomers of the following compounds.
3. a) List the properties of diastereomers. Indicate whether the following are enantiomers or diastereomers.
b) How are disubstituted cyclohexanes different from monosubstituted cyclohexanes with reference to the isomerism? Draw the two chair conformations for each of the following disubstituted cyclohexanes. Draw also the cis and trans isomers and indicate the more stable isomer.
i) cis-Bromo-1-methylcyclohexane
ii) trans-2-Butyl-1-isopropylcyclohexane
iii) cis-4-Ethyl-1-hydroxycyclohexane
4. a) What are the advantages and limitations of method of quasi-racemates?
b) What is pseudoasymmetry? Explain with the help of a suitable example.
5. a) Briefly explain conformationally rigid systems and conformationally mobile diostereomers giving one example for each. Also correlate the reactivity and the conformations of these examples.
b) What are left- and right- circularly polarised lights? Draw suitable diagrams for them.
6. a) Give any two applications of ORD and CD.
b) What is the principle of microscopic reversibility? Explain taking the example of an addition-elimination reaction or a nucleophilic substitution reaction.
7. a) Select the resonance stabilised cation and give reason for your answer.
b) Write the product formed and give the mechanism.
8. a) Does a carbanion behave as an acid or a base? Explain the stability of carbanion on the basis of this behaviour?
b) Arrange the following anions in the decreasing order of stability.
9. a) Predict the product and write the mechanism.
b) Arrange the following radicals in their increase order of stability and give the reason of your answer.
10. Write the products formed in each of the following and give the mechanism.
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Course: M.Sc. in Chemistry (MSCCHEM)
Subject: MCH 12 - STEREOCHEMISTRY AND REACTIVE INTERMEDIATES
Session: January 2026 - December 2026
Language: ENGLISH
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Product Information
| Course Name | M.Sc. in Chemistry |
| Course Code | MSCCHEM |
| Subject Code | MCH 12 |
| Subject | STEREOCHEMISTRY AND REACTIVE INTERMEDIATES |
| Programme | MASTER DEGREE PROGRAMMES Courses |
| Language | ENGLISH |
| Material Type | Solved Assignment – Soft Copy / PDF |
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