Which of the following acts as a natural source of air pollution ?

Related Mcqs:

1. Which of the following is not a natural source of air pollution ?

   A. Volcanic eruptions and lightening discharges
   B. Biological decay of vegetable matter
   C. Photochemical oxidation of organic matter
   D. None of these

2. Presence of nitrogen in high concentration in contaminated air reduces partial pressure of oxygen in lungs, thereby causing asphyxia (suffocation) leading to death from oxygen deficiency. Concentration of N2 in contaminated air at which it acts as a natural asphyxiate is ≥ _____________ percent?

   A. 84
   B. 88
   C. 80
   D. 92

3. Which of the following is a manmade source of air pollution ?

   A. Automobile exhaust
   B. Forest fire
   C. Bacterial action in soil and swamp areas
   D. All A., B. and C.

4. ‘Safe limit’ called Threshold Limit Value (TLV) of carbon monoxide in atmospheric air is < 50 ppm. The main source of carbon monoxide pollutant in air is the____________________?

   A. Industrial chimney exhaust
   B. Automobiles exhaust
   C. Photochemical reaction in polluted atmosphere
   D. Burning of domestic fuel

5. Which of the following sources is responsible for maximum air pollution ?

   A. Industrial chimney exhaust
   B. Forest fire
   C. Automobiles exhaust
   D. Photochemical oxidation of organic matter

6. Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is_________________?

   A. 1.72
   B. 0.58
   C. 0.5
   D. 0.2

7. A car tyre of volume 0.057 m3 is inflated to 300 kPa at 300 K. After the car is driven for 10 hours, the pressure in the tyre increases to 330 kPa. Assume air is an ideal gas and Cv for air is 21 J/mole.K. The change in the internal energy of air in the tyre in J/mole is__________________?

   A. 380
   B. 630
   C. 760
   D. 880

8. Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called________________?

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

9. A source rock that is too immature to generate petroleum in its natural setting is known as__________?

   A. Effective Source Rock
   B. Potential Source Rock
   C. Unconventional Source Rock
   D. All of above

   Submitted by: Sajjad Ali

10. From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about ________________ ppm?

    A. 5
    B. 50
    C. 500
    D. 5000