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प्रश्न
Enumerate methods of protecting the ozone layer and preventing its depletion.
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उत्तर
Methods to protect ozone layer:
- By replacing CFC’s by alternative products and use of HCFC hydochloro fluoro carbons.
- International treaty [Montreal protocol] was also initiated to prevent ozone depletion.
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संबंधित प्रश्न
Write the full name of CFC.
Explain how, harmful ultraviolet radiations of sunlight are prevented from reaching the earth's surface.
What are the causes of depletion of ozone layer? Which diseases are likely to be caused if the ozone layer will become thinner?
What is ozone?
The gas A is used by most of the animals to obtain energy from food by the process of respiration. When A is acted upon by radiation X, it gets converted into another gas B which is an allotrope of A but poisonous when inhaled. B forms a kind of layer C in the upper atmosphere which absorbs radiations X coming from a source Y and prevent them from reaching the earth. Some chemicals Z released from the various devices on the earth are destroying the layer C slowly. In fact, a hole has already been formed in layer C over the area D of the earth.
(a) What are gases (i) A, and (ii) B? Write their molecular formulae.
(b) Name the layer C.
(c) What are (i) X, (ii) Y, and (iii) Z?
(d) Name the area D.
(e) Name any two human ailments which may be caused by X.
“Damage to the ozone layer is a cause of concern”. Justify this statement.
The following picture depicts a certain phenomenon
- Name the phenomenon and explain it.
- Enlist the sources that are responsible for the above mentioned phenomenon.
- List out the effects of the above phenomenon on humans.
Select the correct answer from the following statement:
A chemical responsible for ozone depletion.
Which of the following may be a conclusion of the excessive exposure of humans to sun’s ultraviolet rays?
- Peptic ulcers
- Eye disease like cataract
- Damage to lungs
- Skin cancer
Acid rain is caused by the oxides of ______.
