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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
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Which of the following is dissolved in water to make Bordeaux mixture?
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Correct option: B
Copper sulphate
Option B (Copper sulphate) is correct because Bordeaux mixture, a fungicide, is made by dissolving copper sulphate and lime in water.
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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