Assertion : Presently, the global atmosphere is warming up.
Reason : The depletion of stratospheric ozone layer has resulted in increase in ultraviolet radiations reaching the earth.

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion

If both Assertion and Reason are true but the Reason is not the correct explanation of the assertion

If Assertion is true but Reason is false.

If both Assertion and Reason are false

Solution

If both Assertion and Reason are true but the Reason is not the correct explanation of the assertion

The warming up of global atmosphere is due to the increase in green house effect. It is due to water vapour, CO and other trace gases in keeping the Earth's surface warmer. They are relatively transparent to incoming shortwave radiation (visible spectrum), but are relatively opaque to outgoing reradiating (infrared rays) longwave radiation.

The subsequent reradiation of some of the energy back to the surface maintains surface temperature higher than they would be if the gases were absent. Increasing concentration of the green house gases including CO₂, CH₄, and man made chlorofluorocarbons (CFCs), may enhance the green house effect and cause global warming. Ozone layer present in the stratosphere is depicted by the aerosols and chloroflurocarbons. Ozone protects the earth from high energy ultra violet radiation.

Some More Questions From Environmental Issues Chapter

For Daily Free Study Material Join wiredfaculty

Environmental Issues

Some More Questions From Environmental Issues Chapter

Ozone depletion will cause :

The meaning of BOD is :

Which of the following pollutants is not produced by exhaust of motor vehicles ?

What is the term for the inflammation of cornea due to high absorption of UV-B radiation :

Smog is a mixture of :

WHO’s recommendations about the industrial noise limit is of :

Which of the atmospheric layer contains ozone layer ?

The amount of dissolved oxygen required by the microorganisms to degrade the organic wastes present in water is called ?

The cause of acid rain is :

Which one of the following causes ozone depletion ?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

Phone Number

Email Address

Location