HARD
Earn 100

Choose the correct statement/s related to chlorofluorocarbons (CFCs).

50% studentsanswered this correctly

Important Questions on Biogeochemical Cycles

EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
The following very short answer type question of 2 marks each may be answered in a few words or few sentences or as may be required:
What are the causes of ozone layer depletion?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Name the solar radiation from which the surface of the earth is shielded by ozone layer.
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Which among the following gases absorb long wavelength infrared radiation emitted from the earth’s surface?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
If the amount of pollen grains, fungal spores and dust particles increase suddenly in the air, decide which of the following problems may increase
MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer
What is ozone and how does it affect ecosystem?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Among the following four terms, one includes the other three. Find it out and write it. SPM, Air pollution, Greenhouse gas, Lung disease
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Which of the following is NOT a greenhouse gas?
MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer
Which wavelength of harmful UV-radiations is prevented by the ozone layer from entering the Earth's atmosphere?
MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer

Give reason:

Protecting of ozone layer is necessary.

MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer

Science teacher Mamtaben gives certain statements regarding the importance of the ozone layer. Which statement is totally correct?

(i) Troposphere is not the nearest layer from the earth.

(ii) At a height of 50km in the stratosphere, the ozone layer is located.

(iii) Ozone is a mixed layer of all gases.

(iv) Ozone acts as an umbrella for humans.

(v) Ozone layer is harmful to living organisms.

MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer
Which of the following is responsible for green house effect?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Which one of the following is a Greenhouse gas?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Which factor is responsible for green house effect?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Which of the following greenhouse gases has the maximum contribution towards global warming?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
Which is responsible for increases in global temperature?
MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer
The most important compound which accounts for almost 80% of the total depletion of ozone layer is 
MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer
Explain in brief how the ozone layer is getting depleted.
HARD
Science>Biology>Biogeochemical Cycles>Ozone layer
Write the essential function performed by ozone at the higher levels of the Earth’s atmosphere? How is it produced? Name the synthetic chemicals mainly responsible for the drop of the amount of ozone in the atmosphere. How can the use of these chemicals be reduced?
EASY
Science>Biology>Biogeochemical Cycles>Ozone layer
The products resulting from atmospheric reactions of hydrocarbons and nitrogen oxides in the presence of sunlight are called:
MEDIUM
Science>Biology>Biogeochemical Cycles>Ozone layer
Write the harmful effects of the ultraviolet rays.