MEDIUM
Earn 100

Assertion: A suspended particulate matter (SPM) is an important pollutant released by diesel vehicles.

Reason: Catalytic converters greatly reduce pollution caused by automobiles.

27.59% studentsanswered this correctly

Important Questions on Environmental Issues

MEDIUM
Differentiate between primary and secondary air pollutants.
EASY
Acid rain is caused by the increase in the atmospheric concentration of :
HARD
By scrubbers, which of the gaseous pollutant is removed?
HARD

An example of secondary air pollutant is

EASY
According to Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm to human health?
MEDIUM
We are surrounded by smoke. Is this situation good for our health ? Give reason.
EASY
Particulates of size pose greatest risk to human health.
EASY
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?
EASY

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
EASY
How is SO2 an air pollutant? Clarify.
EASY
Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to
EASY

Speculate the probable causes of each of the following phenomena:

  • Insomnia, High blood pressure, partial or complete deafness
  • Decrease in the concentration of dissolved oxygen in water and floating of dead fishes
  • Dwindling populations of alligators were the result of hunting and loss of habitat,
  • Inflammation in the respiratory tract of lung
  • Decrease in the number of pollination insects 
MEDIUM
Write two effects of peroxyacetyl nitrate (PAN).
EASY
Lichens are sensitive to certain air pollutants and are often replaced by other plants. From the given options choose the best combination of sensitivity and replacement of lichens.
EASY
Percentage of oxygen present in inhaling air is 
EASY
Air pollution that occurs in sunlight is
MEDIUM
The gas which traps heat 20 times more than CO2 is
EASY
Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:
EASY
Which one of the following statements is not valid for aerosols?