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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

In a coal-fired power plant, electrostatic precipitators are installed to control emission of

  • SO2

  • NOX

  • SPM

  • CO


C.

SPM

Electrostatic precipitators are widely used in power plants and these remove the particulate matter.

Electrostatic precipitators are widely used in power plants and these remove the particulate matter.


What is the term for the inflammation of cornea due to high absorption of UV-B radiation :
  • myopia
  • snow blindness
  • biomagnification
  • None of the above

B.

snow blindness

Which of the following pollutants is not produced by exhaust of motor vehicles ?
  • CO
  • Hydrocarbon
  • Fly-ash
  • NO

C.

Fly-ash

The meaning of BOD is :
  • Bacterial oxygen demand
  • Biological optimum density
  • Biochemical oxygen demand
  • Bioorganisation decay

C.

Biochemical oxygen demand

Ozone depletion will cause :
  • Forest fire
  • Pneumonia
  • Increased incidence of skin cancer
  • None of these

C.

Increased incidence of skin cancer

In the scrubber in the electrostatic precipitator the gases are passed through :
  • filter
  • lime
  • spray of water
  • both 2 and 3

D.

both 2 and 3