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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
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Which one of the following statement is true?
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Correct option: A
The greater the BOD of waste water, more is its polluting potential.
Option A (The greater the BOD of waste water, more is its polluting potential) is correct because a higher BOD indicates a greater amount of organic matter that needs to be decomposed, consuming more oxygen and thus causing more pollution.
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(i) Lost of urea and phosphate fertilizer were used in the crops in the vicinity
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(i) Lost of urea and phosphate fertilizer were used in the crops in the vicinity
(ii) The area was sprayed with DDT by an aircraft
(iii) The lake water turned green and stinky
(iv) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis. Which of the following is not used for disinfection of drinking water? World most problematic aquatic weed is