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Class 10 Class 12

Photochemical smog pollution does not contain

  • ozone

  • nitrogen dioxide

  • carbon dioxide

  • PAN (Peroxy Acyl Nitrate)


C.

carbon dioxide

Photochemical smog is highly oxidising polluted atmosphere comprising largely of ozone (O3), oxides of nitrogen (NOx), hydrogen peroxide (H2O2), organic peroxides, peroxy acetyl nitrate (PAN) and peroxy benzyl nitrate (PBzN).
Some sulphates and nitrates can also be formed in photochemical smog due to oxidation of sulphur containing components (SO2,  H2S) and NOx (N2O5, NO2) but it does not contain carbon di-oxide (CO2). Photochemical smog materials and causes damage to plants, human health hazards and corrosion problems.

Photochemical smog is highly oxidising polluted atmosphere comprising largely of ozone (O3), oxides of nitrogen (NOx), hydrogen peroxide (H2O2), organic peroxides, peroxy acetyl nitrate (PAN) and peroxy benzyl nitrate (PBzN).
Some sulphates and nitrates can also be formed in photochemical smog due to oxidation of sulphur containing components (SO2,  H2S) and NOx (N2O5, NO2) but it does not contain carbon di-oxide (CO2). Photochemical smog materials and causes damage to plants, human health hazards and corrosion problems.

775 Views

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
997 Views

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

C.

Increased incidence of skin cancer
560 Views

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

C.

Biochemical oxygen demand
687 Views

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

C.

Fly-ash
711 Views

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
695 Views