The presence of ozone in the troposphere:
- AProtects us from $UV$ radiation
- BProtects us from $X-ray$ radiation
- CProtects us from the greenhouse effect
- DGenerates photochemical smog
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Among the gases $(a)-(e)$,the gases that cause greenhouse effect are
$(a) CO_2$; $(b) H_2O$; $(c) CFCs$; $(d) O_2$; $(e) O_3$
$(a) CO_2$; $(b) H_2O$; $(c) CFCs$; $(d) O_2$; $(e) O_3$
The concentration of dissolved oxygen in water for the growth of fish should be more than $X \ ppm$ and the Biochemical Oxygen Demand $(BOD)$ in clean water should be less than $Y \ ppm$. $X$ and $Y$ in $ppm$ are,respectively:
Which of the following gases causes depletion in the ozone layer?
An increase in $CO_2$ concentration in the atmosphere will result in
Medium
View SolutionWhich of the following is not considered to be a pollutant?
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