Some reactions of NO$$_2$$ relevant to photochemical smog formation are
Identify A, B, X and Y
Which among the following pairs has only herbicides?
Given below are two statements:
Statement I : In polluted water values of both dissolved oxygen and $$\mathrm{BOD}$$ are very low.
Statement II : Eutrophication results in decrease in the amount of dissolved oxygen.
In the light of the above statements, choose the most appropriate answer from the options given below :
Given below are two statements:
Statement I : The non bio-degradable fly ash and slag from steel industry can be used by cement industry.
Statement II : The fuel obtained from plastic waste is lead free.
In the light of the above statements, choose the most appropriate answer from the options given below :