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An accumulation of CO(2) ,ozone and othe...

An accumulation of CO_(2) ,ozone and other pollution - related gases in the lower atmosphere, trapping heat near the earth's surface leading to global warming is known as :

A

Green house effects

B

Biomass

C

Energy pyramid

D

Autecology

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The correct Answer is:
A
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A mixture of N_(2), O_(2), CO _(2) and other traces of gases is known as ………..

Assertion (A): CO_2 , is a main cause for global warming Reason (R) : Greenhouse gases trap the radiant heat from sun

a. The top of the atmosphere is at about 400 kV with respectto the surface of the earth, corresponding to an electric field that decreases with altitude. Near the surface of the earth, the field is about 100 Vm^(-1). Why then do we not get a electric shock as we step out of our house into the openy (Assume the house to be a steel cage so there is no field inside!) b. A man fixes outside his house one evening a two metre high insulating slab carrying on its top a large aluminium sheet of area 1m^(2) . Will he get an electric shock if he touches the metal sheet next morning? c. The discharging current in the atmosphere due to the small conductivity of air is known to be 1800A on an average over the globe. Why then does the atmosphere not discharge itself completely in due course and become electrically neutral? In other words, what keeps the atmosphere charged? d. What are the forms of energy into which the electrical energy of the atmosphere is dissipated during a lightning? (Hint: The earth has an electric field of about 100 Vm^(-1) at its surface in the downward direction, corresponding to a surface charge density =-10^(-9) Cm^(-2) ?.

Arrange the following statements in correct sequence: 1. These vapours condense to form tiny droplets of water. 2. The water droplets come together to form large water droplets. 3. The heat of the sun causes evaporation of water from the surface of the earth, oceans, lakes, rivers and other water bodies. 4. The large water droplets become heavy and the air cannot hold them, therefore, they fall as rains. 5. Water vapour is also continuously added to the atmosphere through transpiration from the surface of the leaves of trees. 6. Warm air carrying clouds rises up. 7. Higher up in the atmosphere, the air is cool. 8. These droplets floating in the air along with the dust particles form clouds.

a.Different kinds of pollutions are listed in column A of the following table . Choose the appropriate control measures from the list provided and fill up column B of the table : (Lead panelling of walls and use of protective aprons , Electrostatic precipitators , incineration and pyrolysis , ozonization , planting trees and hedges). b. In 1995, Nobel Prize of chemistry was awarded to Shewood Rowland, Mario Molina and Paul Curtzen in recognition of their contribution to enviroment science. Among the following , select those terms that are related to their research work. [Carbon monoxide (CO), Ozone (O_(3)) , Carbon dioxide (CO_(2)) , Methane (CH_(4)) , Photochemical smo, Nitrous oxide (N_(2)O) , Sulphur dioxide (SO_(2)) Chlorofluorocarbons (CFCs).

Assertion: In plants, photosynthetic chemicals will be affected due to ozone depletion. Reason: Decreased photosynthesis will result in increased atmospheric CO_(2) , resulting in global warming.

SURA PUBLICATION-NEET BASED QUESTIONS-MULTIPLE CHOICE QUESTIONS
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  2. What is the source of energy that flows through the living world?

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  3. An accumulation of CO(2) ,ozone and other pollution - related gases in...

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  4. In protein synthesis of prokaryotes , the initation of polypeptide cha...

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  5. How many carboon atoms (C-atoms) are there in a molecule of ribulose b...

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  6. POP is abbreviated for :

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  7. which at the following phenomens is a associated with the burning of f...

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  8. Haploid plants can be obtained by culturing:

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  9. During the fementations of grapes for wine preparation ,a reddish brow...

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  10. Members of a biological species are potentially able to :

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  11. Which of the following is the earliest land plant?

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  12. Exergonic reactions are usually:

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  13. A measure of the frequency of crossing -over between two linked chromo...

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  14. In the phosphorus cycle weathering makes phosphate available fist to :

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  15. The shape of polypeptide is :

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  16. In a certain dicotyledonous stem, the fascicular cambium is a meristem...

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  17. Nucleous of the cell is a special region of chromatin where :

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  18. Which of the following plants is is commonly called 'royal fern'?

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  19. The most important feature of all living system from the viewpoint of ...

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  20. The C4 molecules , formed after the CO(2) fixation by CAM plants , are...

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