Environmental Science - 01

01. What is meant by root zone process?

  • 1A control measure to prevent water pollution
  • 2A process by which roots of plants are spread on the ground
  • 3A control measure to prevent soil pollution
  • 4None of these
Answer:- 1
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02. Where cold surface air replaces warm air, the boundary separating the different bodies of air is:

  • 1A parallel of latitude
  • 2A tornado
  • 3A cold front
  • 4A warm front
Answer:- 1
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03. Which of the following statements regarding species interdependence are true?
A. An association of two species where one is benefitted and other remains unaffected called mutualism
B. An interspecific association where both partners derive benefit from each other is called commensalism
C. A direct food relation between two species of animals in which one animals kills and feed on another is referred as predation
D. A relationship between two species of organism where both the partners are benefitted from each other is called symbiosis

  • 1A and B only
  • 2C and D only
  • 3A and C only
  • 4B and C only
Answer:- 1
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04. The air temperature is 45o F, the wind is blowing at 30 MPH, and the wind chill temperature is 15o F. These conditions would be equivalent to:

  • 1A 15o F air temperature and 0 MPH winds
  • 2A 30o F air temperature and 45 MPH winds
  • 3A 30o F air temperature and 15 MPH winds
  • 4A 15o F air temperature and 30 MPH winds
Answer:- 1
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05. The ocean covers ________ percentage of Earth's surface.

  • 151%
  • 261%
  • 371%
  • 491%
Answer:- 1
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06. At which temperature would the earth be radiating energy at the greatest rate or intensity?

  • 1-5o F
  • 2-40o F
  • 360o F
  • 4105o F
Answer:- 1
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07. The range of normal human hearing is in the range of

  • 110 Hz to 80 Hz
  • 250 Hz to 80 Hz
  • 350Hz to 15000 Hz
  • 415000 Hz and above
Answer:- 1
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08. Mobile combustion accounts

  • 110-20% of air pollution
  • 240-50% of air pollution
  • 350-60 % of air pollution
  • 45-10 % of air pollution
Answer:- 1
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09. If water vapor comprises 3.5 percent of an air parcel whose total pressure is 1,000 mb, the water vapor pressure would be:

  • 11,035 mb
  • 235 mb
  • 3350 mb
  • 4965 mb
Answer:- 1
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10. Commonly used radioactive isotopes in scientific research

  • 114 C
  • 2125 I
  • 332 P
  • 4all of these
Answer:- 1
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