JEE Questions for Chemistry Environmental Chemistry Quiz 4 - MCQExams.com

Incomplete combustion of petrol or diesel oil in automobile engines can be best detected by testing the fuel gases for the presence of
  • Carbon monoxide and water vapour
  • Carbon monoxide
  • Nitrogen dioxide
  • Sulphur dioxide
When rain is accompanied by a thunderstorm, the collected rain water will have a pH value
  • Slightly higher than that when the thunderstorm is not there
  • Uninfluenced by occurrence of thunderstorm
  • Which depends upon the amount of dust in air
  • Slightly lower than that of rain water without thunderstorm
Which of the following is a biodegradable pollutant ?
  • Plastic
  • Sewage
  • Asbestos
  • Mercury
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