UPSC Civil Services (Mains), Chemistry optional · 2024 · Paper II
Q4(b)(ii). Energy profile: benzene to chlorobenzene
Question
Draw the energy profile diagram for the conversion of benzene to chlorobenzene, giving structures of the transition states.
Model answer
The free solution for 2024 answers questions 1, 3, 5, 6 and 8, the ones picked in its time plan. Question 4 is answered in full in the Chemistry Paper II, 2021 to 2025 book, with every part of every paper.
Part of VKC Basic
Read the key points and the full model answer with VKC Basic
VKC Basic (₹999 for 6 months) opens every solved answer, the notes, the handbook and the daily answer archive. Every Mains test series includes it.
Printed copy and Kindle
UPSC Civil Services (Main) Chemistry Paper II: Model Answers 2021 to 2025
- All eight questions of each paper, with the question printed above its answer
- Mechanisms drawn out and labelled on the scheme
- Topic-wise weightage and a topic-wise index
Coversenergy profile diagramchlorination of benzeneσ-complextransition stateelectrophilic aromatic substitution
All parts of Question 4
- 4(a)(i) Furan with acetic anhydride and BF₃10 marks
- 4(a)(ii) Major products and mechanism type5 marks
- 4(b)(i) Crossover experiment for the Claisen rearrangement10 marks
- 4(b)(ii) Energy profile: benzene to chlorobenzene5 marks
- 4(c)(i) Major products of three rearrangements10 marks
- 4(c)(ii) Chlorodifluoromethyl phenyl ketone with Ac₂O / AcONa10 marks