Multiple choice

Addition of bleaching powder in small quantities to drinking water is called

  1. convection

  2. chlorination

  3. radiation

  4. electrolysis
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Bleaching powder contains calcium hypochlorite, which releases chlorine when added to water. This process is called chlorination and kills harmful bacteria and microorganisms, making water safe for drinking. Convection is heat transfer, radiation uses electromagnetic waves, and electrolysis splits compounds using electricity.

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