Tag: issues of the environment

Questions Related to issues of the environment

The measures to eliminate pollution from the given environment is called as

  1. Pollution prevention

  2. Pollution abatement

  3. Pollution control

  4. None of the above


Correct Option: B
Explanation:

Pollution abatement is the measure to reduce or eliminate pollution by controlling the direct elimination of pollutants in the environment. It may include technological methods that reduce the amount of pollutant generated in a chemical or other manufacturing facilities like a scrubber, electrostatic precipitator and catalytic converter. 

Thus, the correct answer is option B.

Abatement measures of water pollution is 

  1. Sewage treatment

  2. Septic tank

  3. Green mufflers

  4. Both A and B


Correct Option: D
Explanation:

The method abatement of the pollution is generally adopted to reduce the sources of pollution and the impact and its consequences on the environment and health. The sewage treatment plants are set up in the industries which let out high amounts of liquid waste. Physical, chemical, and biological processes are used to remove contaminants and produce treated wastewater. Septic tank is in which sewage is collected and allowed to decompose through bacterial activity. Green muffler involves the plantation of trees to reduce noise pollution because the trees absorb the excessive noise.

Thus, the correct answer is option D. 

The Environment (Protection) Act to protect and improve the quality of environment (air, water and soil) was passed by the Government of India in the year 

  1. 1971

  2. 1974

  3. 1981

  4. 1986


Correct Option: D
Explanation:

The Environment (Protection) Act, 1986, is the most comprehensive law meant for prevention, control and abetment of environmental pollution by laying down emission norms and setting up of central and state pollution control boards.

Identify the abatement of pollution.

  1. Use of CNG in automobile

  2. Green mufflers

  3. Sewage treatment plant

  4. All of the above


Correct Option: D

Which one of the following is a most efficient device to eliminate particulate matters from the industrial emissions?

  1. Cyclonic separators

  2. Trajectory separators

  3. Pyrolysis

  4. Incineration

  5. Electrostatic precipitator


Correct Option: E
Explanation:

Electrostatic precipitator os the most effective device used to remove particulate matter from the industrial emission. it removes the impurities (dust, fibres) by applying a high voltage electrostatic charge which precipitates the impurities on the charged plates.

According to Kyoto protocol, the major nations abide to reduce concentration of green house gases by

  1. 2008

  2. 2010

  3. 2012

  4. 2018


Correct Option: C
Explanation:

Kyoto protocol was concluded in December, 1997 in the international conference held in Kyoto, Japan. The Kyoto protocol obtained commitments from different countries for reducing overall greenhouse gas emissions to a level 5 percent below 1990 level in between the years 2008 to 2012. In 2012 the period was extended till 2020.

The Air (Prevention and Control of Pollution) Act was amended in 1987 to include which one of the following as pollutant?

  1. Water

  2. Noise

  3. Dust

  4. None of the above


Correct Option: B
Explanation:

Air (Prevention and Control of Pollution) Act, 1981, is meant for preserving quality of air, controlling air pollution and preventing detrimental effects of air pollutants and human health and health of other biological entities. By an amendment in 1987, noise was also recognized as an air pollutant.

The Air (Prevention and Control of Pollution) Act was amended in $1987$ to include one of the following as pollutant

  1. Dust

  2. Noise

  3. Water

  4. None of the above


Correct Option: A
Explanation:
The Air (Prevention and Control of Pollution) Act, 1981 was Amended in 1987. This act was amended to control and prevent air pollution and maintain the good quality of air. This act is meant for preventing the detrimental effects of air pollutants on human health and other biological entities. Hence, this act includes dust as the pollutant as it contributes to air pollution.
So, the correct answer is 'Dust'.

According to Central Pollution Control Board, air pollutants responsible for great harm have a size(in $\mu$m) of

  1. $1.0$ or less

  2. $1.5$ or less

  3. $2.5$ or less

  4. $5.2-2.5$


Correct Option: C
Explanation:
Particulate air pollutants are tiny particles or materials suspended in the atmosphere. These can be solids or liquid droplets.
According to Central Pollution Control Board (CPCB), Particulate matter having size 2.5 μm or less in diameter, are responsible for causing serious health hazards such as respiratory symptoms, irritations, damage to lungs, inflammations and even premature death.
So, the correct answer is '2.5 or less'.