Question

Ozone hole refers to
A) Hole in the ozone layer
B) Reduction in thickness of the ozone layer in the stratosphere
C) Reduction of the thickness of ozone in the troposphere
D) Increase the concentration of ozone

Answer 1

Hint: The ozone hole refers to depletion in the thickness of the Ozone layer. The Ozone is depleted due to a variety of manmade reasons such as environmental pollution, global warming, etc.

Complete answer:
The correct answer for the question is option “B”, a reduction in thickness of the Ozone layer. The thickness of the ozone layer is getting reduced every due to global warming, the alarming rate of environmental pollution, deforestation, and other biohazards. All these factors are causing a dent in the Ozone layer. The reason why the ozone layer is very important is that the ozone layer protects us from the dangerous UV rays which are liberated from the Sun and other cosmic radiations coming from solar sources.

The reduction in the thickness of the Ozone layer is due to the following reasons:
1.When substances like CFC, HFC and methyl bromide enter into the stratosphere they release UV rays which can harm the ozone layer.
2.The UV rays release chlorine and bromine which contains reactive cells and the resulting chemical reactions can harm the sustenance of the ozone layer.
3.The depletion of the thickness of Ozone can cause several problems to mankind; they will be exposed to the harmful ultraviolet rays of the Sun and other potential dangers lurking outside.
4.Ultimately in the absence of the Ozone layer, there is a potential danger of the entire mankind getting perished.

All these factors are causing a dent in the Ozone layer. The reason why the ozone layer is very important is that the ozone layer protects us from the dangerous UV rays emanating from the Sun and other cosmic radiations coming from various solar sources.

Hence, the correct answer is option (B)

Note: Students need to remember that the Ozone layer is an important feature of nature that keeps us safe from the harmful radiations. The thickness of the ozone layer is getting reduced every due to global warming, the alarming rate of environmental pollution, deforestation, and other biohazards.