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What is meant by surface water pollution ?

Important Questions on Environmental Issue

EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
One of the following is called as 'Terror of Bengal'.
MEDIUM
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seeded plant is crossed with a green seeded plant, what ratio of yellow and green seeded plants could you expect in F1 -generation?
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Which of the following is non-biodegradable?
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Which one of the following organisms is used as indicator of water quality?
MEDIUM
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
A lake near a village suffered heavy mortality of fish within a few days. Consider the following reasons for this

I. Lots of urea and phosphate fertilizers 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 (eutrophication).

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?
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Escherichia coli is used as an indicator organism to determine pollution of water with
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
A disease caused by eating fish contaminated by industrial waste containing mercury compounds is known as
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Which one of the following diseases is not caused due to contamination of water?
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Fish die in water bodies polluted by sewage due to:
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
In a __________ protocol, bacteria with engineered abilities to detoxify pollutants are intentionally released in an area.
MEDIUM
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Knock knee disease is due to
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Biological Oxygen Demand (BOD) is a measure of
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Which one of the following is not a bioindicator of water pollution ?
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
The greatest problem of water conservation is to reduce the amount of
MEDIUM
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
 Match the following and choose the correct option.
Column I Column II
A.    Environment Protection Act  (i) 1974
B.    Air Prevention & Control of Pollution Act (ii) 1987
C.    Water Act   (iii) 1986
D.    Amendment of Air Act to include noise as an air pollutant (iv) 1981
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Fluoride pollution mainly affects
MEDIUM
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Which of the following is absent in polluted water?
MEDIUM
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Cadmium pollution caused _____(itai-itai/minamata) disease in Japan.
MEDIUM
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Which one of the following impurities is easiest to remove from wastewater?
EASY
Biology>Ecology and Environment>Environmental Issue>Water Pollution and its Control
Presence of 20 or more genera of algae in a water body is an indication of high organic pollution. It is: