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NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES
1
Medium
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Analyzing
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A: Ozone is a catalyst depleting CFC.
R: Good ozone is troposphere protects the living organisms from harmful effects of U.V radiations.
R: Good ozone is troposphere protects the living organisms from harmful effects of U.V radiations.
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Correct option: D
Both Assertion and Reason are false statements
Option D (Both Assertion and Reason are false statements) is correct because ozone is not a catalyst depleting CFCs, and \"good ozone\" is in the stratosphere, not the troposphere.
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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