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Dy the presence given graph shows changes in variousfactors (L, M and N) present in a water bodyafter the sewage is discharged at a point Xe should alwaysIl onlyII, III and IVgh red hot coke,ed. The name ofcomposition areAmount/NumberMNХ2coFully and fill in thepropriate optiont Characteristicof productTurns redlitmus solutionblues, Burns withSewage discharge pointDistance downstream -Refer to the given graph and select theincorrect statement regarding L, Mand N.A. L could be bacteria which increasetremendously in number due toaddition of sewage waste.B. M corresponds to biological oxygendemand which decreases due to theaccumulation of sewage in water,C. N could be aquatic animals like fish,which die on account of non-availabilityof dissolved oxygen.D. Both A and CRand |
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