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UPSC PYQPrelims 2025

Civil Services Examination · Question 10

Statement I: Activated carbon is a good and attractive tool to remove pollutants from effluent streams and to remediate contaminants from various industries. Statement II: Activated carbon exhibits a large surface area and a strong potential for adsorbing heavy metals. Statement III: Activated carbon can be easily synthesized from environmental wastes with high carbon content. Which one of the following is correct in respect of the above statements?

  1. Both Statement II and Statement III are correct and both of them explain Statement I
  2. Both Statement II and Statement III are correct but only one of them explains Statement I
  3. Only one of the Statements II and III is correct and that explains Statement I
  4. Neither Statement II nor Statement III is correct
Show answer & explanation

Answer: (A) Both Statement II and Statement III are correct and both of them explain Statement I

Explanation

High surface area/adsorption capacity (II) and low-cost synthesis (III) together explain why activated carbon is an attractive depollution tool (I).