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Green chemistry differs from end-of-pipe pollution control in acting at the

  • A.disposal stage of the product
  • B.regulatory stage after an incident
  • C.design stage of the process
  • D.discharge point of the effluent

Answer: C

Correct answer: design stage of the process

End-of-pipe control accepts the process as given and cleans up what emerges; green chemistry changes the process so that less emerges. Acting at the design stage is cheaper, because the cost of treatment plant is avoided altogether, and more effective, because a hazard that is not created cannot escape.

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