Which of the following gases contributes to global warming?

Related Mcqs:

1. 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

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

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

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. 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

6. The major factors that make today’s ‘land-use crisis’ a global issue of greatest concern is:

   A. The magnitude of the problem on terms of people and areas affected, which is unprecedented in history
   B. The accelerating nature of the processes involved and the increasing irreversibility of their results
   C. The lack of success (for socio-economic, cultural or ecological reasons) of most agriculture technologies from temperate regions to solve land-productivity problems over large areas of the topics
   D. All of the above

7. Biological control component is central to advanced agriculture production. Which of the following is used as a third generation pesticide?

   A. Pathogens
   B. Pheromones
   C. Insect repellant
   D. Insect hormone analogue

8. Which of the following is the use of lichens in case of pollution?

   A. They treat the polluted water
   B. They act as bio-indicators of pollution
   C. They promote pollution
   D. Lichens are not related with pollution

9. A hydrocarbon having the following number of carbon atoms doesn’t exist freely in the atmosphere:

   A. C16
   B. C18
   C. Both (a) & (b)
   D. C10

10. The following radioactive isotopes are formed by nuclear fission:

    A. Sr90, I131
    B. Cr51, Cu64
    C. Zr95, Mn54
    D. All of these