Potassium permanganate is used to purify water as its is

This question was previously asked in
WBCS Prelims 2020 Official Paper
View all WBCS Papers >
  1. sterilizing
  2. oxidizing
  3. reducing
  4. leaching

Answer (Detailed Solution Below)

Option 2 : oxidizing
Free
Most Asked Topics in UPSC CSE Prelims - Part 1
10 Qs. 20 Marks 12 Mins

Detailed Solution

Download Solution PDF

The correct answer is oxidizing.

Key Points

  • Potassium permanganate (KMnO4) is a strong oxidizing agent that oxidizes dissolved impurities from water such as iron, manganese, and hydrogen sulfide (H2S) by converting them into solid particles.
  • These impurities are then filtered out of the water.
  • It is a salt consisting of K⁺ and MnO− 4 ions.
  • It is a strong oxidizing agent.
  • It is used as a medication for cleaning wounds and dermatitis.

Additional Information

  • Some other chemical disinfectants used for water:
    • Hypochloride
    • Chlorine dioxide
    • Chlorine
    • Hydrogen peroxide
    • Potassium permanganate
    • Gamma rays
    • Ultraviolet light

Latest WBCS Updates

Last updated on May 1, 2025

-> Commission has released the new Scheme & Syllabus for WBCS Exam 2025. The topics and exam pattern for prelims and mains is mentioned in the detailed syllabus.

-> The West Bengal Public Service Commission (WBPSC) will soon release the detailed WBCS Notification for various Group A, Group B, Group C & D posts.

-> Selection of the candidates is based on their performance in the prelims, mains, and interviews.

-> To crack the examination like WBCS, candidates need to check the WBCS Previous Year Papers which help you in preparation. Candidates can attempt the WBCS Test Series.

Hot Links: teen patti bindaas teen patti bliss teen patti game online master teen patti teen patti bodhi