What ever CFCs are added to the stratosphere they have permanent and continuous effect on ozone level. Explain. What are the ill effects of thinning of ozone layer?

What are the ill effects of global warming?

Freons are known with respect to ozone layer deplection. i) What are Freons?

As a result of stratospheric pollution the ozone layer is destructed. Write a harmful effect of ozone layer depletion.

a) What is meant by the green house effect? b) Explain what is meant by green house gases.

What is the effect of adding sugar on boiling and freezing point of water?

Which of the following statement/s is /are wrong: (i) Nitric oxide and chlorofluoro carbons are two main ozone depleting agents. (ii) In the stratosphere CFCs undergo photochemical decomposition to produce chlorine free radical which destroy ozone layer. (iii) Ozone hole has mainly been observed in the stratosphere over Antarctica. (iv) Innon polar regions of the stratosphere, chlorine monoxide free radicals combine with NO_(2) and chlorine free radicals combine with methane, as a result the chain reaction causing ozone depletion stops v. Northern hemisphere is free from ozone depletion