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dB is a standard abbreviation used for the quantitative expression of:

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Important Questions on Human and Environment

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Biology>Ecology>Human and Environment>Environmental Pollution
The highest DDT concentration in aquatic food chain shall occur in
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Biology>Ecology>Human and Environment>Environmental Pollution
A river with an inflow of domestic sewage rich in organic waste may result in:
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Biology>Ecology>Human and Environment>Environmental Pollution
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
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Biology>Ecology>Human and Environment>Environmental Pollution
The biomagnification of which pollutant causes a decline in the bird population?
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Biology>Ecology>Human and Environment>Environmental Pollution
Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:
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Biology>Ecology>Human and Environment>Environmental Pollution
One of the following is called as 'Terror of Bengal'.
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Biology>Ecology>Human and Environment>Environmental Pollution
An increase in the concentration of the toxicant at successive trophic levels is known as:
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Biology>Ecology>Human and Environment>Environmental Pollution
The minimum proportion of impurities that made the drinking water unfit for human consumption is____________
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Biology>Ecology>Human and Environment>Environmental Pollution
According to Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm to human health?
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Biology>Ecology>Human and Environment>Environmental Pollution
According to Supreme Court of India, ruling with respect to 'Bharat Stage VI' Norms, from which date, these are supposed to be implemented in the country?
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Biology>Ecology>Human and Environment>Environmental Pollution
In an area where DDT has been used extensively, the population of birds declined significantly because -
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Biology>Ecology>Human and Environment>Environmental Pollution
Which one of the following statements is not valid for aerosols?
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Biology>Ecology>Human and Environment>Environmental Pollution
Which ONE of the following can NOT cause eutrophication of lakes?
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Biology>Ecology>Human and Environment>Environmental Pollution
A lake which is rich in organic waste may result in
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Biology>Ecology>Human and Environment>Environmental Pollution
The maximum concentration of harmful chemicals is expected to be found in organisms
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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
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Biology>Ecology>Human and Environment>Environmental Pollution
Which of the following is called the ‘Terror of Bengal’
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Biology>Ecology>Human and Environment>Environmental Pollution

Match the following

  List-I   List-II
(A) Hospital wastes (I) Electrostatic precipitators
(B) SO2 pollution (II) Catalytic converters
(C) Particulates (III) Scrubbers
(D) Automobile exhausts (IV) Biotoilets
    (V) Incinerators
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Biology>Ecology>Human and Environment>Environmental Pollution
Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to
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Biology>Ecology>Human and Environment>Environmental Pollution
Acid rain is caused by the increase in the atmospheric concentration of :