IGNOU - CHE-06 (Jan 24 - Dec 24, Jan 23 - Dec 23) Solved Assignment
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This particular Assignment references the syllabus chosen for the subject of Chemistry, for the January 2024 - December 2024 session. The code for the assignment is CHE-06 and it is often used by students who are enrolled in the B.Sc. Degree.
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CHE-06 (January 2024 – December 2024) Assignment Questions
1. a) Which of the carbocation is more stable in the following pairs and why?
b) Explain the following:
i) Enol form does not react with water to give diol.
ii) Fluorine and iodine generally do not react with alkene or alkyne.
iii) Hydroboration looks like an anti-Markownikowf’s addition.
2. Explain the following:
a) Electron withdrawing substituents at the carbonyl carbon increases the reactivity towards nucleophilic addition reactions.
b) Reaction of hydrocyanic acid and benzaldehyde is very slow, but become fast when cyanide ion is added.
3. a) Explain isotope effect in E2 elimination reaction with suitable example.
b) Differentiate Saytzeff and Hofmann rules giving suitable examples.
4. a) State oxidation state. Calculate the oxidation state of carbon atom of CCl4.
b) Predict the product(s) and give the mechanism of the following reactions:
5. Write short note on the following: (Give mechanism)
a) Aldol condensation
b) Michael addition
6. Write the chemical reaction for the following reactions along with their detail description:
a) Reimer-Tiemann reaction
b) Carbylamine reaction
c) Wittig reaction
d) Wolf rearrangement
7. a) Explain, why the reaction of m-bromoanisole with sodamide gives only one product.
b) Describe the bromination reaction at alkylic and benzylic position by N-bromosuccinimide.
8. a) Write detail mechanism for the following rearrangements:
i) Wagner-Meerwein rearrangement
ii) Backmann rearrangement
b) Explain the mechanism of [4+2] cycloaddition.
9. a) Taking suitable examples, explain the role of sensitisers in photo reactions.
b) Describe reaction types used to construct a carbon skeleton with suitable examples.
10. Write short notes on:
a) Cleaning action of soaps
b) Auxochromes
c) Antibiotics
d) Condensation polymers
e) Retrosynthesis
IGNOU CHE-06 (January 2023 – December 2023) Assignment Questions
The IGNOU open learning format requires students to submit study Assignments. Here is the final end date of the submission of this particular assignment according to the university calendar.
30th April (if Enrolled in the June Exams)
31st October (if Enrolled in the December Exams).
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