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Question
Depletion of ozone in the ozone layer is a cause for our worry. Why?
Solution
The ozone layer is present in the troposphere of the earth's atmosphere. It forms a protective shield and protects the surface of earth from the sun's ultraviolet (UV) radiation. Depletion of ozone layer can cause skin cancer and eye damage in human beings.
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RELATED QUESTIONS
Ozone depletion is occurring widely in the stratosphere; it leads to an ozone hole caused mainly due to ______.
What are the causes of depletion of ozone layer? Which diseases are likely to be caused if the ozone layer will become thinner?
How Ozone is Formed?
O2 is converted into O3 by the action of :
(a) infrared radiations
(b) ultraviolet radiations
(c) gamma radiations
(d) cosmic radiations
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.
Why is ozone layer called ozone umbrella/shield?
How are CFCs harmful?
State how CFCs break ozone in the stratosphere.
Select the correct answer from the following statement:
The gas which in presence of U.V. light gives two atoms of the same gas.
Name or state the following:
The atom which reacts with oxygen to form ozone.
