Effect of pollutions first and most marked on:

Related Mcqs:

1. Effect of pollution is first marked on:

   A. Micro-organisms
   B. Green vegetation of an area
   C. Food crop
   D. None of these

2. The effect of pollution is first and most marked on:

   A. Natural flora of a place
   B. Natural balance of our environment
   C. Natural geo-chemical cycles
   D. All the above three

3. Wave erosion is more prevalent and well marked:

   A. Along rivers
   B. At the sea shore
   C. In water falls
   D. In all these places

4. Greenhouse effect is due to:

   A. CO
   B. CO2
   C. NO2
   D. PO4

5. Greenhouse effect is:

   A. Caused by CO2 only
   B. Caused by CH4, SO2, NO2 gases
   C. Caused by those gases which absorb the infra-red light reflecting from earth
   D. Caused by combination of many gases

6. Green house effect refers to:

   A. Cooling of earth
   B. Trapping UV rays
   C. Production of cereals
   D. warming of earth

7. The toxic effect of carbon monoxide is due to its greater affinity for haemoglobin as compared to oxygen by (appro.)

   A. 20 times
   B. 100 times
   C. 2 times
   D. 200 times

8. Greenhouse effect refers to:

   A. Production of cereals
   B. Trapping of UV rays
   C. Cooling of earth
   D. Warming of earth

9. Green-house effect is due to the presence of:

   A. Ozone layer in the atmosphere
   B. Infra-red radiations
   C. Moisture in the atmosphere
   D. CO2 in the atmosphere

10. The effect of today’s radioactive fallout will probably be more harmful to children of future generations than to children now living because:

    A. Contamination of milk supply is not cumulative
    B. Infants are more susceptible to radiation
    C. Susceptibility to radiation increases with age
    D. Mutated genes are frequently recessive