Which of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage ?

Related Mcqs:

1. Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?

   A. CO
   B. SO2
   C. NOx
   D. CFC (chloro fluoro carbons)

2. ‘Particulate’ air pollutants are finely divided solids and liquids. Which of the following is not a „particulate‟ ?

   A. Dust & mists
   B. Smoke & fumes
   C. Photochemical smog & soot
   D. None of these

3. Which of the following is the most major constituents of air pollutants ?

   A. Oxides of sulphur
   B. Oxides of nitrogen
   C. Carbon monoxide
   D. Hydrogen sulphide

4. Carcinogenic air pollutants cause__________________?

   A. Bone decay
   B. Cancer
   C. Asphyxiation (suffocation)
   D. Anemia

5. High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes____________________?

   A. Cancer
   B. Silicosis
   C. Respiratory disease (e.g., asthma)
   D. Reduced crop yield

6. Most of the atmospheric air pollutants are present in large quantity in__________________?

   A. Stratosphere
   B. Thermosphere
   C. Troposphere
   D. Mesosphere

7. Which of the following pollutants is absent in the emissions from a fertiliser plant ?

   A. SO2 & SO3
   B. NO2
   C. NH3
   D. CO

8. There are thirteen metals which are treated as pollutants. Which of the following metals is not a pollutant ?

   A. Mercury
   B. Arsenic
   C. Aluminium
   D. Lead

9. Which of the following pollutants, if present in atmosphere is detectable by its odour ?

   A. CO
   B. SO2
   C. NO2
   D. CO2

10. Main pollutants released from petroleum refineries is__________________?

    A. CO, SO2 & H2S
    B. CO2, NO & SO3
    C. CO2, H2S & NO2
    D. SO3, NO2 & CO2