Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine air borne particles which lead to:

Related Mcqs:

1. Erosion of very fine particles is seen on account of:

   A. Saltation
   B. Suspension
   C. Surface creep
   D. Shifting of dunes

2. Those chemicals which are produced by plants and affect other plants are broadly called:

   A. Depresants
   B. Allomones
   C. Allelochemics
   D. Kairomones

3. How CO emitted by automobiles prevents transport of O2 in the body tissues?

   A. By changing O2 into CO
   B. By destroying the haemoglobin
   C. By forming a stable compound with haemoglobin
   D. By obstructing the reaction of O2 with haemoglobin

4. Major pollutant present in the jet plane emission is:

   A. CCI4
   B. SO2
   C. CO
   D. Fluoro-carbon

5. The automobile emission can be reduced by adding the following in the petrol:

   A. Calcium salts
   B. Cobalt salts
   C. Silicon oil
   D. Barium salts

6. Which major aerosol pollutant is present in jet aircraft emission?

   A. SO2
   B. Fluoro-carbons
   C. CCI4
   D. CO

7. Which of the following serves as source of carbon in plants:

   A. CO2 of carbonic rocks
   B. Atmospheric CO2
   C. Fossil fuel
   D. All of the above

8. The transfer of food energy from the source in plants through a series of organism with repeated stages of eating and being eaten is known as:

   A. Food web
   B. Food chain
   C. Food cycle
   D. None of these

9. The non-green plants are as important as the green plants because they:

   A. Cause human disease
   B. Cause diseases of other plants
   C. Are useful in several industries
   D. Bring about decomposition of dead animals and plant remains

10. Among the plants listed, point out one that does not fit into ecological group represented by the other plants:

    A. Acacia
    B. Aloe
    C. Euphorbia
    D. Rhizophora