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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
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Euro II norms stipulate that sulphur be controller at ______ ppm in diesel and ________ ppm in petrol.
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Correct option: A
350; 150
Option A (350; 150) is correct because Euro II norms stipulate that sulphur be controlled at 350 ppm in diesel and 150 ppm in petrol.
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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