The extent of darkness caused due to smoke can be determined by the help of:

Related Mcqs:

1. The percentage of air pollution caused due to smoke:

   A. 10-15%
   B. 15-20%
   C. 20-25%
   D. 2-5%

2. The air pollution caused by phosphate fertilizer factories is due to:The air pollution caused by phosphate fertilizer factories is due to:

   A. Phosphene
   B. SiF4
   C. Dust
   D. Halogens

3. Thick clouds of smoke containing soot and other particles coming out of the factories cause health problems for nearby people. Such as irritation of eyes and:

   A. Heart diseases
   B. Gastric diseases
   C. Kidney trouble
   D. None of these

4. Minimata disease was caused due to the consumption of:

   A. Sea food containing lot of cadmium
   B. Fish contaminated with mercury
   C. Oysters with lot of pesticide
   D. Sea food contaminated with selenium

5. In human beings, anoxia is caused due to:

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

6. The ‘blue baby syndrome’ is caused due to pollution by:

   A. Chlorides
   B. Cyanides
   C. Fluorides
   D. Nitrates

7. Minamata diseased was caused due to water pollution by:

   A. Lead
   B. Cyanides
   C. Methyl isocyanate
   D. Mercury

8. Thermal pollution in water bodies is caused due to discharge of:

   A. Hot water from power plants
   B. Hot chemicals from industries
   C. Waste from mines
   D. Waste from agricultural fields

9. Field capacity is the extent to which a soil can hold:

   A. Gravitational water
   B. Capillary water
   C. Hygroscopic water
   D. Capillary water plus hygroscopic water

10. Diseased trees (k) including those which are infected with parasites to such an extent that their growth is seriously affected or that they are a danger to their neighbours:

    A. Dominant
    B. Dominated and suppressed
    C. Both (a) & (b)
    D. None of these