Question

Which layer of the atmosphere contains the ozone layer?
A. Stratosphere
B. Troposphere
C. Exosphere
D. Mesosphere

Answer 1

Hint: The atmosphere can be described as a blanket of gases that surrounds the earth. The nature of the atmosphere is colorless, tasteless, and odorless. It gives us air to breathe and water to drink and keeps us warm by retaining the sun’s heat and also at the same time shields us from the sun’s harmful rays.

Complete answer:
The stratosphere is a layer of the earth’s atmosphere and is the second major layer as we go upward. The stratosphere contains about 19 percent of the atmosphere’s gases but very little water vapor. In the stratosphere, the ozone layer is found in abundance. The thin layer of ozone gas is a region found within the stratosphere and this layer protects us by absorbing the harmful ultraviolet rays of the sun and it contains a high concentration of ozone in relation to other parts of the atmosphere. However, the built-up of man-made gases such as chlorofluorocarbons (CFCs) has depleted the ozone layer and holes have started to appear in it every spring over the poles. This can be prevented by taking certain steps such as maintaining air conditioners, minimizing the use of cars, avoiding the consumption of gases that are harmful to the ozone layer, using environment-friendly and local products.
So, the correct answer is Option A.

Note: The ozone layer was discovered in the year 1913 by Charles Fabry and Henri Buisson who were two renowned French physicists. The ozone layer in the Stratosphere absorbs more than 90 percent of the sun’s UV rays.