Biology
Grade-7
Easy

Question

In water filters, ___________ absorbs organic pollutants and eliminates unpleasant odors and tastes.

  1. Distillation
  2. Potassium permanganate
  3. Sewage
  4. Carbon

hintHint:

This element decides whether a compound is organic or inorganic.

The correct answer is: Carbon


    • Organic compounds are those which contain carbon 
    • Carbon is used in preparing water filters
    • The carbon is present in the form of granulated activated carbon in the filters
    • The carbon is a good adsorbent which helps in purification by attracting the contaminants to its surface
    • The carbon absorbs organic compounds like dye or phenolic compounds and also inorganic compounds like chlorine, halides, etc
    • The carbon filters also remove unpleasant odor and taste from the sewage

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