EASY
Earn 100

The high value of BOD (Biochemical Oxygen Demand) indicates that:

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Important Questions on Human and Environment

EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Which of the following is called the ‘Terror of Bengal’
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Which ONE of the following can NOT cause eutrophication of lakes?
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
The minimum proportion of impurities that made the drinking water unfit for human consumption is____________
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
A river with an inflow of domestic sewage rich in organic waste may result in:
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
A lake which is rich in organic waste may result in
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Crop rotation with legume or grass pasture to improve soil structure and fertility is called,
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
The maximum concentration of harmful chemicals is expected to be found in organisms
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Biochemical Oxygen Demand (BOD) may not be a good index for pollution for water bodies receiving effluents from
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
One of the following is called as 'Terror of Bengal'.
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
The biomagnification of which pollutant causes a decline in the bird population?
MEDIUM
Biology>Ecology>Human and Environment>Environmental Pollution
Rachel Carson's famous book ''Silent Spring'' is related to:
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
HARD
Biology>Ecology>Human and Environment>Environmental Pollution

Match the following:

List-1 List-2
A) Global warming
B) Eutrophication
C) Biomagnification
D) Ozone depletion		 I) Mercury
II) UV-B rays
III) Methane
IV) Algal blooms
V) Terror of Bengal

The correct match is:

HARD
Biology>Ecology>Human and Environment>Environmental Pollution
Match the items given in Column I with those in Column II and select the correct option given below:
 
  Column – I   Column –II
a. Eutrophication i. UV-B radiation
b. Sanitary landfill ii. Deforestation
c. Snow blindness iii. Nutrient
d. Jhum cultivation iv. Waste disposal
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Match the following
  Pollutant   Control
(A) Particulates (I) Catalytic converters
(B) Emissions of automobiles (II) Incinerators
(C) Sulphur dioxide (III) Electrostatic precipitator
(D) Hospital wastes (IV) Cooling towers
    (V) Scrubbers

The correct match is

EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Eutrophication is the natural ageing of lake by _______
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
Phosphate pollution is brought about by          
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
In an area where DDT has been used extensively, the population of birds declined significantly because -
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
The highest DDT concentration in aquatic food chain shall occur in
EASY
Biology>Ecology>Human and Environment>Environmental Pollution
An increase in the concentration of the toxicant at successive trophic levels is known as: