Tag: evs - i

Questions Related to evs - i

Which amongst the following is one of the effects of soil pollution?

evs - i waste and its management sources of waste protecting our environment rules are for everyone

  1. Minimata disease

  2. Lead poisioning

  3. Bio-accumulation

  4. Higher growth yield

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Correct Option: C
Explanation:

Presence of unwanted contaminant in soil is called soil contamination. The deposition of pesticides on fruits and vegetables lead to its accumulation in fatty tissues of the host. This phenomenon is called bio accumulation.

Among the following which one causes more indoor chemical pollution?

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

  1. Burning coal

  2. Burning cooking gas

  3. Burning mosquito coil

  4. Room spray

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Correct Option: A
Explanation:
Among the given four options, both burning of coal and burning of mosquito coil will cause chemical pollution, but burning of coal will cause more pollution. The main ingredient in mosquito coils is pyrethrum C (a natural extract from the Chrysanthemum flower). At high doses, it is responsible for various respiratory disorders. The coal leads to release of a wide array of air pollutants $ \left( { CO } _{ x }{ SO } _{ x }{ NO } _{ x }\quad etc. \right) . $ Among these, CO is very dangerous, it interfer with breathing process. People are generally advised not to sleep with coal burning in the closed room.
So, the correct answer is 'Burning coal'.

In metropolitan cities, the automobiles cause air pollution.

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

  1. $80\%$

  2. $60\%$

  3. $50\%$

  4. $100\%$

Show answer
Correct Option: A
Explanation:

Most of the automobiles have an environmental impact up to 80 to 90 percent., It is due to fuel consumption and emissions of air pollution and greenhouse gases that are said to drive global warming.

So, the correct option is '80%'.

Which gas is supposed to be the main gas responsible for air pollution?

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

  1. $SO _2$

  2. $CO _2$

  3. $CO$

  4. $O _2$

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Correct Option: A

What is causes of increase in $CO _{2}$

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

  1. Volcanic Eruption

  2. Deforestation

  3. Photosynthesis

  4. Burning of fossil fuel

Show answer
Correct Option: D

What are 'anthropogenic' sources of CO?

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

  1. Industries, Motor Vehicles

  2. Forest fire

  3. Volcanic Eruption

  4. Deforestation

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Correct Option: A

In big cities automobiles are responsible for ...... % of air pollution.

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

  1. 50%

  2. 70%

  3. 80%

  4. 100%

Show answer
Correct Option: B
Explanation:

Vehicle emissions are responsible for 70% of the country's air pollution. Exhaust from vehicles has increased eight-fold over levels of twenty years ago. Air quality is worst in big cities like Kolkata, Delhi, Mumbai, Chennai, etc.

Air pollution is caused by

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

  1. Smoke

  2. Automobile exhausts

  3. Radioactive substances

  4. All of the above

Show answer
Correct Option: D
Explanation:

Air pollution can be defined as the mixing of harmful gases or chemical substances in the air, that results into harmful effects on flora as well as fauna. The major pollutants of air pollution includes the harmful untreated gases that are released into the atmosphere from factories, also the carbon monoxide gas released from the burnt fuel in the automobiles. Sometimes the leakage of radioactive substance also led to adverse effects on living organism.

Therefore the correct answer is option D.

Air pollution is maximum due to

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

  1. Sewage and pesticides

  2. Automobile exhausts and industrial wastes

  3. Sewage and effluents

  4. Detergents and pesticides

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Correct Option: B
Explanation:

Burning of fossil fuels leads to their combustion causing the release of carbon dies oxide in air. It also releases other harmful gases that cause air pollution. So, option B " Automobile exhausts and industrial wastes" is the correct answer.

Apart from this, sewage and pesticides cause soil pollution. Sewage and effluents cause water pollution. Similarly, Detergents also cause water and soil pollution.

The air around us has various types of unwanted particles, such as

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

  1. Smoke

  2. Dust

  3. Pollens

  4. All of the above

Show answer
Correct Option: D
Explanation:

The air around us has various types of unwanted suspended particles like- smoke, dust, pollens etc. When we inhale these particles get trapped in the hair present in our nasal cavity. However, sometimes these particles may get past the hair present in our nasal cavity. Then they irritate the lining of the cavity as a result of which we sneeze. Sneezing expels these foreign particles from the inhaled air and a dust-free, clean air enters our body. 

Therefore, the correct answer is option D.