Greenhouse Effect And Climate Change Test

Greenhouse Effect And Climate Change

This is online test 02 for CBSE class 12 Biology Environmental Issues (Greenhouse effect and climate change).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Which of the two countries are most affected by global warming
  • A
    Maldives and Bangladesh
    Correct
  • B
    Maldives and Bhutan
  • C
    India and Maldives
  • D
    Pakistan and Bangladesh
2
Global warming will cause
  • A
    None of the above
  • B
    Rise in level of oceans, decrease in glaciers and reduction in ice caps.
    Correct
  • C
    Reduction in ice caps
  • D
    Decrease in glaciers only
3
Methane is being added to atmosphere by
  • A
    Only cows.
  • B
    Wheat field, marshes and cows.
  • C
    Paddy fields, marshes and cows.
    Correct
  • D
    Only paddy fields.
4
Ozone layer in upper atmosphere is being destroyed by
  • A
    \(S{O_2}\)
  • B
    Photochemical oxidants
  • C
    Chlorofluorocarbon
    Correct
  • D
    Smog
5
The two main reason for increase in CO2 gas is
  • A
    Increasing population and mining
  • B
    Destruction of forest and excessive combustion.
    Correct
  • C
    Using of refrigerator and destruction of forests.
  • D
    Using refrigerator and excessive combustion.
6
Green house gases are
  • A
    Absorbers of long-wave radiations from earth
    Correct
  • B
    Transparent to emissions from earth for passage into outer space.
  • C
    Transparent to both solar radiations and long wave radiations form earth.
  • D
    Absorbers of solar radiations for warming the atmosphere or earth
7
In human eye, cornea absorbs UV-B radiation and a high dose of UV-B causes
  • A
    Inflammation of cornea called snow-blindness cataract.
    Correct
  • B
    Inflammation of retina called snow-blindness cataract.
  • C
    Inflammation of lens called snow-blinder myopia
  • D
    All of the above.
8
Ozone present in stratosphere comes from
  • A
    Microbial decay on earth.
  • B
    Reaction between nitrogen oxides and oxygen.
  • C
    Photosynthetic activity from earth.
  • D
    Photochemical interactions of oxygen molecules.
    Correct
9
Assertion: Warming of atmosphere due to global warming will cool the thermosphere. Reason: Cooling of thermosphere result in disruption of radio-communication system.
  • A
    Both are correct but reason do not explain the assertion.
  • B
    Assertion is correct but reason is incorrect.
  • C
    Both assertion and reason are correct.
    Correct
  • D
    Both assertion and reason are incorrect.
10
Concentration of green house is increasing due to I. Deforestation II. Increased use of refrigerators III. Increased combustion of coal and petroleum IV. Increasing human population
  • A
    All statements are incorrect.
  • B
    All statements are correct.
  • C
    Statement II, III and IV are correct.
  • D
    Statement I, II and III are correct.
    Correct