Tag: evs - i

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Questions Related to evs - i

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Which of these activities causes air pollution?

  1. Rapid urbanization and industrialization

  2. Deforestation

  3. Burning of fuels like coal and petroleum

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Air pollution is due to various substances that holds the potential to hinder the atmosphere or the well  being of the living beings surviving in it. The sustainment of all things living is due to a combination of gases  that collectively form the atmosphere; the imbalance caused by the increase or decrease of the percentage  of these gases can be harmful for survival. All the above mentioned a, b & c points are the cause of air  pollution.

So, the correct answer is 'All of the above'.

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Human activities such as transportation and manufacturing result in the greatest impact on the Earth through

I. Soil erosion
II. Habitat destruction
III. Air pollution 

  1. I only

  2. II only

  3. III only

  4. I and II only

  5. II and III only
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
I. Soil erosion is the loss of upper fertile layer of soil due to flood, wind or any other natural calamity.
II. Habitat destruction is the loss of natural home of organisms i.e. destruction in the place where an organism lives.
III. Air pollution is any undesirable change in the atmosphere.
Human activities such as transportation and manufacturing have resulted in the emission of harmful gases like carbon dioxide, methane etc. Hence they have caused the greatest impact on Earth through Air pollution.
So, the correct answer is 'III only'.
Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Which of the following doesnot cause air pollution?

  1. Increasing forest reserves

  2. Using pesticides in farms

  3. Developing housing estates

  4. Quarrying for limestone
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The use of excessive chemical fertilizers and pesticides results in the water pollution and soil pollution. The construction of the housing estates results in air pollution. The quarrying of the limestone also results in the release of the particles causing air pollution. The increase in the forest reserves does not result in any kind of pollution. 

Thus, the correct answer is option A. 

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Huge amount of toxic chemicals leak into the surrounding eco system because of

  1. Industries

  2. Mining

  3. Pestisides

  4. Modern technology
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Industrial activities are a primary source of large-scale chemical leaks into ecosystems. While mining and pesticides also contribute to pollution, industries are generally cited as the most significant source of massive chemical releases.

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Lead (Pb) causes

  1. Soil pollution

  2. Air pollution

  3. Radioactive pollution

  4. All the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lead is an important pollutant of soil and atmosphere. Lead is a heavy metal and very immobile element. Hence, the lead may quickly reach very high concentrations locally. Lead is a prominent pollutant released from factories manufacturing dry cells and batteries. In the atmosphere, lead is released by combustion of fossil fuels. Fossil fuels contain lead compounds as an additive as antiknock agents. Combustion of such fuel in vehicles leads to air pollution.

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Major aerosol pollutant in jet plane emission is

  1. Sulphur dioxide

  2. Carbon monoxide

  3. Methane

  4. Fluorocarbon
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Aerosols are the minute particles that are released with the pressure and remain suspended in the air. These can be sold particles or liquid droplets. The natural aerosols appear in the form of the fog, dust, forest exudates, geyser steams etc. The anthropogenic aerosols are more harmful and persist for the longer duration, like smoke, particulate matter etc. The emission from the jets comprises mainly of the fluorocarbons that are emitted with an immense pressure to provide propulsion to the engine.

Hence, the correct answer is 'Fluorocarbon'.

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Air pollution is not caused by

  1. Pollen grains

  2. Hydroelectric power

  3. Industries

  4. Automobiles
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hydroelectric power is the cleanest form of electricity generation without contributing to the air pollution as it does not require the burning of fuel for working and water is provided by a natural force and moreover, it is renewable by rainfall causing refilling of reservoir. The dams are built which provide storage and it helps in reducing greenhouse gases emissions apart from the fact that once it becomes operative these have a low maintenance cost.

A. Pollen grains cause respiratory allergies.
B. Hydroelectric power does not release any pollutant.
C. Industries release oxides of carbon, sulphur and nitrogen and particulate matters.
D. Automobiles also release oxides of carbon, sulphur and nitrogen.
Hence, the correct answer is 'Hydroelectric power'.

Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

Which is not an air pollutant?

  1. Phosphate

  2. Hydrocarbons

  3. Pollen grains

  4. Carbon monoxide

  5. Sulphur dioxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
A. Phosphate is a charged ion that contains mineralized phosphorus.
B. Hydrocarbons are the compounds containing hydrogen and carbon. They are released from vehicles due to burning of fuels.
C. Pollen grains can cause allergic reactions to some people and hence, considered as air pollutants.
D. Carbon monoxide is released from the combustion of fuels and pollute air.
E. Sulphur dioxide is emitted from the vehicles. It is responsible for acid rain.
Hence, phosphate is not an air pollutant.
So, the correct answer is 'Phosphate'.
Multiple choice evs - i life is precious road safety and pollution pollution of natural resources air pollution and its effects

______ is a device for separation of pollutants from air.

  1. Autoclave

  2. Distillator

  3. Scrubber

  4. Electronic precipitator
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

There are several contaminants found in air. It is very important to purify this polluted air .A fine spray of water in a device known as scrubber can effectively separate many gases such as ammonia and sulphur dioxide.