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 II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2021 · Paper II, Chemistry · Q17 of 120

Geo-Scientist Prelims 2021 Chemistry Q17: Consider the following statements: Statement-1: KO₂ is paramagnetic…

Questions-block / superoxides

Consider the following statements:
Statement-1: KO₂ is paramagnetic
Statement-2: The super oxide O₂⁻ is paramagnetic because it has one unpaired electron in π* 2p molecular orbital

Which one of the following is correct in respect of above statements?

  1. (a) Both statement-1 and statement-2 are true and statement-2 is the correct explanation of statement-1
  2. (b) Both statement-1 and statement-2 are true but statement-2 is not the correct explanation of statement-1
  3. (c) Statement-1 is true but statement-2 is false
  4. (d) Statement-1 is false but statement-2 is true

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