Which of the following plants does not emit appreciable amount of SO2 in atmosphere ?

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. _____________ plant emits large amount of SO2 as an air pollutant?

   A. Nitric acid
   B. Sulphuric acid
   C. Chlor alkali
   D. Iron & steel

3. The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?

   A. Ionosphere
   B. Troposphere
   C. Stratosphere
   D. None of these

4. Which of the following is an adsorbent used for the removal of SO2 from gas/air ?

   A. Bog iron
   B. Limestone powder or alkalised alumina
   C. Silica gel
   D. Active carbon

5. Green house gases blanket/block the infrared radiation from earth’s surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect ?

   A. CO2
   B. H2
   C. SO3
   D. N2

6. When the concentration of SO2 in air is greater than ______________ ppm, it gives a pungent smell?

   A. 0.01
   B. 0.1
   C. 1
   D. 4

7. Exposure to SO2 containing chimney gases results in the__________________?

   A. Reduction in strength of leather & cloth
   B. Acceleration of corrosion rates of metals
   C. Increased drying & hardening time of paints
   D. All A., B. and C.

8. Death may occur, when SO2 concentration in atmospheric air exceeds ______________ ppm?

   A. 20
   B. 100
   C. 400
   D. 200

9. Pollution by particulate matter emission in the atmosphere does not take place during metal____________________?

   A. Grinding
   B. Machining
   C. Cutting
   D. Polishing

10. A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?

    A. Hydrogen
    B. Carbon dioxide
    C. Ozone
    D. None of these