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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
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In the last decades, most serious nuclear reactor accident created MIC gas tragedy in
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Correct option: B
Ukraine (1986) and Bhopal (1984)
Option B (Ukraine (1986) and Bhopal (1984)) is correct because the Chernobyl disaster in Ukraine occurred in 1986, and the Bhopal gas tragedy in India occurred in 1984.
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A lake near a village suffered heavy mortality of fishes with in a few days. Consider the following reasons for this.
(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
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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