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

Related Mcqs:

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

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

2. 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

3. 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

4. Green house effect refers to:

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

5. 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

6. Green filler is used against which type of pollution?

   A. Air
   B. Water
   C. Soil
   D. Noise

7. Which of the following gases contributes to global warming?

   A. Carbon di-oxide
   B. Nitrogen di-oxide
   C. Carbon monoxide
   D. Sulphur dioxide

8. Which of the following gases is regarded as an atmospheric pollutant?

   A. O2
   B. O3
   C. SO2
   D. N2

9. Some reliable indicators of air pollutants (SO2 and noxious gases) are:

   A. Ferns and Cycas
   B. Green algae and aquatic liverworts
   C. Lichens and mosses
   D. Neem’ tree and Eichhornia

10. Which of the following is not a commonly used pesticide?

    A. Aldrin
    B. Lindane
    C. Chlordane
    D. Chloremphenicol