This chapter is currently out of syllabus
1
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Biochemical Oxygen Demand (BOD) in a river water :
A
Gives a measure of Salmonella in the water
B
has no relationship with concentration of oxygen in the water
C
Increases when sewage gets mixed with river water
D
Remains unchanged when algal bloom occurs
2
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Global agreement in specific control strategies to reduce the release of ozone depleting substances, was adopted by :
A
The Montreal Protocol
B
The Kyoto Protocol
C
The Vienna Convention
D
Rio de Janeiro Conference
3
AIPMT 2009
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
Step taken by the Government of India to control air pollution include :
A
Permission to use only pure diesel with a maximum of 500 ppm sulphur as fuel for vehicles
B
Compulsary PUC (Pollution Under Control) certification of petrol driven vehicles which tests for carbon monoxide and hydrocarbons
C
Use of non-polluting Compressed Natural Gas (CNG) only as fuel by all buses and trucks
D
Compulsory mixing of 20% ethyl alcohol with petrol and 20% biodiesel with diesel
4
AIPMT 2008
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
A lake near a village suffered heavy mortality of fishes within a few days. Consider the following reasons for this?
(i) Lots 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 two of the above were the main causes of fish mortality in the lake?
A
(i), (ii)
B
(iii), (iv)
C
(i), (iii)
D
(ii), (iii)
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