VKC ScienceChemistry for written exams Telegram

UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper I covers general studies.

UPSC Combined Geo-Scientist, Prelims · 2023 · Paper I, General Studies · Q62 of 120

Geo-Scientist Prelims 2023 General Studies Q62: The electrophile generated in sulphonation of benzene from fuming…

QuestionOrganic chemistry / electrophilic substitution

The electrophile generated in sulphonation of benzene from fuming sulphuric acid is

  1. (a) SO₃⁺
  2. (b) SO₃H
  3. (c) SO₃
  4. (d) SO₂H

Part of VKC Basic

Read the answer and its explanation 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.

See what is included Already a member? Sign in

Take this paper offlineAll 120 questions with answers and explanations in one PDF.
Download PDFJoin Telegram