Green-house effect is due to the presence of:

Related Mcqs:

1. Green house effect refers to:

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

2. 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

3. The major contributor to green house gases to the atmosphere is:

   A. Russia
   B. USA
   C. Brazil
   D. Germany

4. Today, concentration of green house gases is high because of:

   A. Use of refrigerator
   B. Increased combustion of oil and coal
   C. Deforestation
   D. All the above

5. Gases commonly referred to as ‘green house gases’ are:

   A. CH4, N2, CO2 and NH3
   B. CO2, O2, NO2 and NH3
   C. Chloro-fluoro-carbons, CO2, NH3 and N2
   D. CO2, chloro-fluoro-carbons, CH4 and NO2

6. The light of cities is reduced in comparison to villages due to the presence of:

   A. SO2 and SO3
   B. SO2 and oxides of nitrogen
   C. Hydrocarbons and N2O
   D. Suspended particulate matter

7. Tajmahal is threatened due to the presence of:

   A. Chlorine/NO2
   B. SO2
   C. Oxygen/ozone
   D. Hydrocarbons

8. Greenhouse effect is due to:

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

9. 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

10. 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