NEET / AIPMT / AIIMS / KCET / JIPMER Exams – Biology – Environmental Issues -Test – 4
No of questions – 10
Marks : 10 (10×1)
Time : 10 mins
NEET / AIPMT / AIIMS / KCET / JIPMER Exams – Biology – Environmental Issues -Test – 4
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Question 1 of 10
1. Question
Eutrophication is often seen in [2011]
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Question 2 of 10
2. Question
Biochemical Oxygen Demand (BOD) in a river water [2009]
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Question 3 of 10
3. Question
DDT residues are rapidly passed through food chain causing biomagnifications because DDT is [2009]
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Question 4 of 10
4. Question
A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this? [2008]
(1) Lots of urea and phosphate fertilizer were used in the crops in the vicinity
(2) The area was sprayed with DDT by an aircraft
(3) The lake water turned green and stinky
(4) Phytoplankton populations in the lake declined initially thereby greatly reducing photosynthesis.
Which two of the above were the main causes of fish mortality in the lake?CorrectIncorrect -
Question 5 of 10
5. Question
In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (s), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order ? [2007]
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Question 6 of 10
6. Question
Which one of the following is not a bio-indicator of water pollution? [2007]
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Question 7 of 10
7. Question
Limit of BOD prescribed by Central Pollution Control Board for the discharge of industrial and municipal waste waters into natural surface waters, is [2006]
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Question 8 of 10
8. Question
Prolonged liberal irrigation of agricultural fields is likely to create the problem of [2005]
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Question 9 of 10
9. Question
Which of the following is not used for disinfection of drinking water? [2005]
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Question 10 of 10
10. Question
More than 70% of world’s freshwater is contained in: [2005]
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