The smog is essentially caused by the presence of
- AOxides of sulphur and nitrogen
- B$O_2$ and $N_2$
- C$O_2$ and $O_3$
- D$O_3$ and $N_2$
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Given below are two statements :-
Statement $I :$ The value of the parameter "Biochemical Oxygen Demand $(BOD)$" is important for survival of aquatic life.
Statement $II :$ The optimum value of $BOD$ is $6.5 \ ppm$.
In the light of the above statements,choose the most appropriate answer from the options given below:
Statement $I :$ The value of the parameter "Biochemical Oxygen Demand $(BOD)$" is important for survival of aquatic life.
Statement $II :$ The optimum value of $BOD$ is $6.5 \ ppm$.
In the light of the above statements,choose the most appropriate answer from the options given below:
Air pollution that occurs in sunlight is:
What percentage of the total atmosphere is occupied by the homosphere?
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View SolutionThe primary pollutant that leads to photochemical smog is
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View SolutionThe ions of $Ni, Hg, Ag, Pb, Zn$ etc.,are generated as waste from which industry?
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