MEDIUM
Earn 100

The electrostatic precipitators (ESP) are the instruments where the gas containing dust is passed between two _____.

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Important Questions on Environmental Issues

MEDIUM
In the 1990s, Delhi was ranked fourth among the most polluted cities in the world. What are the parallel steps taken to reduce vehicular pollution?
EASY
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

MEDIUM
Explain why we are looking at the alternative sources of energy.
MEDIUM
Mention two ways of controlling air pollution created by automobiles. 
EASY
Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:
MEDIUM
Looking at the deteriorating air quality because of air pollution in many cities of the country, the citizens are very much worried and concerned about their health. The doctors have declared a health emergency in the cities where the air quality is very severely poor.
As a captain of your school Eco-club, suggest any two programmes you would plan to organise in the school so as to bring awareness among the students on how to check air pollution in and around the school.
EASY

Given below are two statements:

Statement I: Electrostatic precipitator is most widely used in thermal power plant.

Statement II: Electrostatic precipitator in thermal power plant removes ionising radiations.

In the light of the above statements, choose the most appropriate answer from the options given below:

EASY
According to Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm 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
Which one of the following statements is not valid for aerosols?
MEDIUM
Which one of the following is not a conventional source of energy?
EASY
The use of CNG is better than petrol or diesel. Give four reasons.
MEDIUM

Given below are two statements:

Statement I: In a scrubber, the exhaust from the thermal plant is passed through the electric wires to charge the dust particles.

Statement II: Particulate matter (PM 2.5) cannot be removed by a scrubber but can be removed by an electrostatic precipitator.

In the light of the above statements, choose the most appropriate answer from the options given below:

EASY
Eutrophication of water bodies leading to killing of fishes is mainly due to non-availability of
EASY
A river with an inflow of domestic sewage rich in organic waste may result in:
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
Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorder causing wheezing due to
EASY
Acid rain is caused by the increase in the atmospheric concentration of :