Tag: life is precious

Questions Related to life is precious

For corrosion of metals, there should be

business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. Exposed surface of metal

  2. Moisture

  3. Air

  4. All the above

Show answer
Correct Option: D
Explanation:
Corrosion is a natural process of formation of oxides of metal on reaction with oxygen and moisture present in the air. Generally, all metals can corrode. A layer of rust forms on the surface of metals such as in case of iron which corrodes very fast on exposure to air. Hence, for corrosion of metals, the surface of metal should be exposed to air and there should be moisture in the air.
Hence, all the given options are correct.
So, the correct answer is 'All the above'.

Which of the following measures can be taken by people to reduce air pollution?

business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. Encourage your family to use the bus, train or bike when commuting

  2. Rapidly accelerate the transition away from coal towards clean energy sources, like solar and wind

  3. If you are buying a car, look for a fuel-efficient model

  4. All of the above

Show answer
Correct Option: D
Explanation:

People also should take initiative to reduce air pollution like 

  1. People should use public transport like bus or train for a long rout and use a bicycle for short distance.
  2. Use a renewable source of energy like solar and wind for electricity, cooking and water heating.
  3. Use fuel efficient car model for less consumption of fuel.
So the correct answer is 'All of the above'. 

Which of the following pollutants are released by burning fossil fuels and reduces visibility, especially in cold weather, when water also condenses out of the air?

business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. Oxides of Sulphur

  2. Oxides of Nitrogen

  3. Unburnt carbon particles

  4. All of the above

Show answer
Correct Option: C
Explanation:

On burning, fossil fuel with minimum oxygen supply is given unburn carbon particle which doesn't settle down and get mix with water vapour. In winter it gets worse, visibility of air get dropdown and very hard to breath because of a minute particle present in the air. Sulphur and Nitrogen are also harmful but they are not involved in visibility problem.

so the correct option is 'Unburnt carbon particles'.

Main causes of air pollution are

business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. Excessive burning of fuels

  2. Burning of wood

  3. Vehicles releasing smoke

  4. All of the above

Show answer
Correct Option: D
Explanation:

Air pollution means the presence of gases, dust particles, fumes, smokes, harmful chemicals in the atmosphere such that that makes it harmful to other living beings. Causes of air pollution includes:

1. Excessive burning of fossil fuels.
2. Burning of wood.
3. Indoors air pollution.
4. Agricultural activities.
5. Vehicles releasing smoke.
6. Mining operations.
7. Forest fire.
8. Aerosols and CFCs.
Thus, the correct answer is 'All of the above.'

.......... is a main man-made factor to create environmental problems.
business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. Pollution and degradation of air

  2. Climate change

  3. Over population

  4. All of the above

Show answer
Correct Option: D
Explanation:

There are various man-made factors that create the environmental problems. These factors include air pollution, degradation of air, water contamination, over population, industrial mining, climate change, deforestation, fossil fuels, fertilizer use, etc. The natural factors responsible for environmental problems include forest fire, water vapour, frost soil, etc.

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

ESP is to arrest

business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. Water Pollution

  2. Air Pollution

  3. Radio Activity Pollution

  4. Soil Pollution

Show answer
Correct Option: B
Explanation:

ESP or electrostatic precipitators are used to remove dust particles from flue gas (such as gas from broilers). The dust particles present in the air get charged as they pass through the electrostatic precipitator and get collected at the collection electrode. It can, therefore, be used to remove air pollutants such as dust. 

So, the correct answer is 'Air pollution'.

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

Of the following, which one causes more indoor chemical pollution

business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. Turning coal

  2. Burning mosquito coil

  3. cooking gas

  4. Room spray

Show answer
Correct Option: A
Explanation:

Coal usually produces a lot of smoke. So, when burning indoor it creates a lot of chemical pollution.

Mosquito coil, cooking gas and room spray doesnt produce a lot of smoke. 

Heavy dust can cause

business organisation and correspondence life is precious road safety and pollution pollution of natural resources air pollution and its effects

  1. leaf blights

  2. opening of stomata

  3. closure of stomata

  4. browning of leaves

Show answer
Correct Option: C

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