EARTH’S ATMOSPHERE

                                                                                                                                                   Proff. R. S. Sengar

1. An indicator of fluorine pollution is:

(a) Rice         (b) Beans

(c) Maize         (d) Garden pea

Ans. C

2. Biological magnification is:

(a) Increase in biomass of different trophic levels in the pyramid of biomass

(b) Increase in reproductive potential of an organism

(c) Increased accumulation of toxic substances in the food pyramid

(d) All of the above

Ans. C

3. Mark the wrong statement/s

(I) Lead is a cause of soil pollution

(II) Green house effect is actually global warming

(III) Large particles are removed by cyclone reactoras

(IV) CFC are used as refrigerant

Codes:

(a) I,III       (b) IV only

(c) I,III,IV     (d) I,III

Ans. A

4. Environment planning organization is:

(a) ICMR     (b) CSIR

(c) WHO     (d) NEERI

Ans. D

5. The algal bloom due to the addition of washed of fertilziers in aquatic reaservoir is:

(a) Nitrification    (b) Eutrophication

(c) Biobllom     (d) Biomagnification

Ans. B

6. In the coming years the skin diseases will be more common due to:

(a) Depletion  of ozone

(b) Excess use of detergent

(c) Increase in air pollution

(d) Increase in atmospheric pressure

Ans. A

7. Melting of glaciers may result from:

(a) Increase in CO2 in the atmosphere

(b) Increase in oxygen in the atmosphere

(c) Increase in UV rays

(d) Depletion of ozone layer

Ans. A

8. The major pollution causing agent is:

(a) Hydrocarbon gases     (b) Man

(c) Animals               (d) Microbes

Ans. B

9. Which of the following measures can be taken to reduce the wastage of energy:

(a) Growing fuel wood trees

(b)Use of biogas

(c) Preparation of smokeless stoves

(d) All of the above

Ans. D

10. Which one is not a fossil fuel?

(a) Natural Gas   (b) Uranium

(c) Petrol         (d) Coal

Ans. B

11. The indicator species for water pollution is:

(a) Molluses      (b) Fish

(c) Zooplankton   (d) Tubifex

Ans. B

12. Which of the following is non-biodegradable pollutant?

(a) Plastic       

(b) Mud

(c) Fruits, vegetables

(d) Leaves

Ans. A

13. The most toxic pollutant of automobile exhaust is:

(a) Cd            (b) Cu

(c) Pb            (d) Hg

Ans. C

14. When the pollutants in the water makes it rich in organic and mineral nutrients:

(a) The growth of lichens will increase & oxygen demand will decreases

(b) Only aerobic organism increase and oxygen demand will be high

(c) The microbial growth will decrease & oxygen demand will increase

(d) The microbial growth will increase & oxygen demand will decrease

Ans. D

15. Decomposition of organic matter by microbes is measured in terms of:

(a) Growth of algae

(b) Amount of secondary pollutants produced

(c) Biochemical oxygen demand

(d) Amount of primary pollutants produced

Ans. C

Writer: Dr. R. S. Sengar, Director Training and Placement, Sardar VallabhBhai Patel University of Agreiculture and Technology, Modipuram, Meerut.