Tag: environment pollution

Questions Related to environment pollution

An effective air-pollution control equipment is an attachment that electrically attracts pollutant particles in hot, escaping gases. It is known as:

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  1. an electric condenser

  2. a gas condenser

  3. an air purifier

  4. an electrostatic precipitator

Show answer
Correct Option: D
Explanation:

Electrostatic precipitator is a device that uses an electric charge to remove certain impurities such as solid particles liquid  from air and ether gases. It is particularly used to remove particles and power generating stations. 

State True or False.
Forest Fires and droughts are man made causes of deforestation.

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  1. True

  2. False

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Correct Option: B
Explanation:

Forest fires and droughts are caused naturally as man is not responsible for these. 

Phosphate pollution is caused by:

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  1. weathering of phosphate rocks only

  2. agriculatural fertilizers only

  3. phosphate rocks and sewage

  4. sewage and agricultural fertilizers

Show answer
Correct Option: D
Explanation:

Nitrates in water can cause severe illness in infants and domestic animals. Common sources of excess nitrate reaching lakes and streams include septic systems, animal feedlots, agricultural fertilizers, manure, industrial wastewaters, sanitary landfills, and garbage dumps. So D is the correct option. 

Modes of controlling pollution in large cities include :

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  1. less use of insecticides

  2. proper disposal of organic wastes, sewage and industrial effluents

  3. shifting of factories out of the residential area

  4. all of the above

Show answer
Correct Option: D
Explanation:

A person who is exposed to small amounts of insecticides over a long period of time can experience the effects of chronic poisoning and also pesticide spray can drift and pollute the air. Thus less use of insecticides should be done.

Also, proper disposal of organic waste, sewage, and industrial waste also reduce pollution.
Shifting large factories out of the residential area prevents less human contact with the pollution.
Hence, all options are the correct modes of controlling pollution in large cities.

State True or False.
Deforestation increases the chances of natural calamities 

economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

Deforestation increases the chances of natural calamities.
Deforestation means cutting down trees where it increases the chances of floods and droughts.
Note:
Deforestation may be caused naturally or there may be man made causes of deforestation.

Which of the following represents type(s) of environmental pollution

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  1. Air pollution

  2. water pollution

  3. soil pollution

  4. All of the above

Show answer
Correct Option: D
Explanation:

Air pollution, water pollution and soil pollution represents types of environmental pollution. The contamination of air, water and soil is the environmental pollution. Certain impurities are added to environment due to human activities such as burning coal, dumping waste in water, deforestation, burning of fuel etc.

We need fresh air for breathing. Some sources that cause pollution of air are mentioned here. Can you pick the false one?

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  1. Coal fires

  2. Heavy rain

  3. Volcanoes

  4. Forest fires

Show answer
Correct Option: B
Explanation:

Coal fires, volcanoes and forest fires causes air pollution due to release of many pollutants such as $CO _2$, whereas High-speed wind and dust storm cause pollution.

Which are the following consequences of deforestation?

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  1. Decrease in rainfall

  2. Decrease in fertility of soil

  3. Increased global warming

  4. All of the above

Show answer
Correct Option: D
Explanation:

All of the following are the consequences of deforestation.
(A) Decrease in rainfall
(B) Decrease in fertility of soil
(C) Increased global warming
Cutting of trees reduces amount of rainfall, it also decreases the fertility of soil. Deforestation increases the temperature and carbon dioxide level thus causing increased global warming.

$pH$ of the rain is increased in heavy industrial area due to:

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  1. acid rain

  2. land pollution

  3. water pollution

  4. none of the above

Show answer
Correct Option: A
Explanation:

Acid rain is the emission of oxides of sulphur and nitrogen in the atmosphere. This includes burning of fossil fuels containing sulphur and nitrogenous matter (such as coal and oil in furnaces and power stations, petrol and diesel in automobiles). 
Due to increase in acid gases in rain, the pH will change due to acid rain.

The gas responsible for causing Bhopal tragedy was:

economics environment pollution strategies to control environmental pollution strategies to control pollution strategies to control environmental pollution and green chemistry

  1. methyl isocyanate

  2. potassium isothiocyanate

  3. sodium isothiocyante

  4. ethyl isothiocyante

Show answer
Correct Option: A
Explanation:

The Bhopal disaster or Bhopal gas tragedy was an industrial accident. It happened at a Union Carbide subsidiary pesticide plant in the city of Bhopal, India. On 3 December 1984, the plant released 42 tons of toxic methyl isocyanate (MIC) gas, exposing more than 500,000 people to toxic gases.