NEET UG BIOLOGY MCQ: ENVIRONMENTAL ISSUES

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In almost all Indian metropolitan cities like Delhi, the major atmospheric pollutant (s) is /are

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Correct option: C

Carbon dioxide and carbon monoxide

Option C (Carbon dioxide and carbon monoxide) is correct because in many Indian metropolitan cities, the major atmospheric pollutants are carbon dioxide and carbon monoxide, primarily from vehicle emissions and industrial activities.

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Supreme court of India has ordered the Delhi government to take measures to improve the quality of air. The government started to use _________________ in public fleet. The unfavorable alteration of environment due to human activities is termed as The polluting strength of sewage is usually characterized by its 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
(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