Water Pollution
Water Pollution: Overview
This topic covers concepts such as Water Pollution, Types of Water Pollutants, Biomagnification, and Water Pollution control.
Important Questions on Water Pollution
On setting of an industrial unit in an area, the number of bird populations is expected to:
Drinking mineral water with very low level of pesticides (0.02ppm) for long periods may
Biological Oxygen Demand (BOD) is a measure of
Which of the following is biodegradable pollutant?
Which of the following exhibits biomagnification?
The maximum concentration of harmful chemicals is expected to be found in organisms
A food chain in a polluted aquatic ecosystem is given. Observe it and answer the following question.
Fresh water → Algae → Fishes → Birds.
This ecosystem will be destroyed gradually due to biomagnification because
A food chain in a polluted aquatic ecosystem is given. Observe it and answer the question.
Freshwater → Algae → Fishes → Birds.
Which organisms are disturbed more due to biomagnification?
Rachel Carson's famous book "Silent Spring" is related to
DDT and mercury undergo biomagnification in the food chains.
Which heavy metal is responsible for Minamata disease? (Mercury/Cadmium/ Zinc)
Which one of the following diseases is not due to contamination of water?
"Industries are pouring poisons in water." Explain.
Which one of the following diseases is not due to contamination of water?
Which of the following causes biomagnification?
The concentration of polychlorinated biphenyls (PCB, an organochlorine contaminant) in many fish populations has been declining, since a ban on their production was instituted in the late 1970 s. remain a potential problem, however, because they are lipophilic and are known to biomagnify. Based on this knowledge, what type of fish is expected to be safest for human consumption?
Identify the plant group with the largest ovule, largest tree, and largest gametes from the following groups.
