How is ozone gas produced in the stratosphere?
- ABy the action of $UV$ radiation on $O_2$ molecules.
- BBy the reaction of $O_2$ with $N_2$.
- CBy the combustion of fossil fuels.
- DBy the reaction of $O_2$ with $CO_2$.
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Similar Questions
Sewage containing organic waste should not be disposed of in water bodies because it causes major water pollution. Fishes in such polluted water die because of:
Difficult
View SolutionAmong the gases $(a)-(e)$,the gases that cause greenhouse effect are
$(a) CO_2$; $(b) H_2O$; $(c) CFCs$; $(d) O_2$; $(e) O_3$
$(a) CO_2$; $(b) H_2O$; $(c) CFCs$; $(d) O_2$; $(e) O_3$
Which of the following is a lung irritant that can lead to an acute respiratory disease in children?
Match List-$I$ with List-$II$.
List-$I$ List-$II$ $A$. Sulphate $(> 500 \ ppm)$ $I$. Methemoglobinemia $B$. Nitrate $(> 50 \ ppm)$ $II$. Brown mottling of teeth $C$. Lead $(> 50 \ ppb)$ $III$. Laxative effect $D$. Fluoride $(> 2 \ ppm)$ $IV$. Kidney damage
Choose the correct answer from the options given below.
| List-$I$ | List-$II$ |
| $A$. Sulphate $(> 500 \ ppm)$ | $I$. Methemoglobinemia |
| $B$. Nitrate $(> 50 \ ppm)$ | $II$. Brown mottling of teeth |
| $C$. Lead $(> 50 \ ppb)$ | $III$. Laxative effect |
| $D$. Fluoride $(> 2 \ ppm)$ | $IV$. Kidney damage |
Choose the correct answer from the options given below.
Which of the following is a renewable resource?
Easy
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