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Delhi - 2015
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Q3 of 60 Page 1

What is the function of ozone in the upper atmosphere?

The Ozone layer at the upper atmosphere perform the function of absorbing the harmful ultra violet (UV) rays coming from sun and prevents them from reaching the earth. These UV rays cause harmful effects to humans, animals and plants.


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1

Write the name and formula of the 2nd member of homologous series having general formula CnH2n.

2

List two functions performed by the testes in human beings.

4

List four characteristics of the images formed by plane mirrors.

5

Why are forests considered "biodiversity hot spots"? List two ways in which an individual can contribute effectively to the management of forests and wildlife.

Questions · 60
Delhi - 2015
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