Tag: life is precious

Questions Related to life is precious

Air pollution is not caused by

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

  1. Pollen grains

  2. Hydroelectric power

  3. Industries

  4. Automobiles

Show answer
Correct Option: B
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'.

Which is not an air pollutant?

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

  1. Phosphate

  2. Hydrocarbons

  3. Pollen grains

  4. Carbon monoxide

  5. Sulphur dioxide

Show answer
Correct Option: A
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 Questions
In coal fired power plant, electrostatic precifications are used to control emission of

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

  1. $SO _2$

  2. $SPM$

  3. $CO$

  4. $NO _X$

Show answer
Correct Option: B
Explanation:

Electrostatic precipitators use the principle of electrically charging particles in an exhaust and then allowing them to settle on variably charged platforms. It is done primarily for control of SPM or suspended particulate matter such as dust, fumes, smoke etc.

So, the correct answer is option B, SPM.

Multiple Choice Questions
A pollutant producing burning sensation of throat and eyes along with feeling of vomiting is

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

  1. Hydrogen sulphide

  2. Sulphur dioxide

  3. Hydrogen cyanide

  4. Arsenic.

Show answer
Correct Option: A
Explanation:

H$ _2$S is a primary air pollutant emitted from putrifying substances, refineries, bituminous fuels etc. It causes burning sensation of throat and eyes along with feeling of vomiting or nausea. In plants it may cause defoliation and mottled chlorosis.

So, the correct answer is option A, Hydrogen sulphide.

Multiple Choice Questions
Which particulate size is most harmful?

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

  1. $1.0\,\, \mu$m or less

  2. $1.5 \,\,\mu$m or less

  3. $2.5\,\,\mu$m or less

  4. $5.2 \,\,\mu$m- $2.5 \,\,\mu$m.

Show answer
Correct Option: C
Explanation:

PM or particulate matter of diameter $2.5\,\,\mu$m or less is the most harmful as they are inhaled deep into the lungs causing serious lung damages, deposition in respiratory tracts and even death of the person.

So, the correct answer is $2.5\,\,\mu$m or less.

Air pollution, trapped by leaves, through

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

  1. Forests

  2. Grasses

  3. Plant

  4. Animals

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Correct Option: A

What is colorless, odorless, tasteless and cannot be felt?

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

  1. Water

  2. Air

  3. Gas

  4. pollutants

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Correct Option: B

______ is a device for separation of pollutants from air.

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

  1. Autoclave

  2. Distillator

  3. Scrubber

  4. Electronic precipitator

Show answer
Correct Option: C
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.

The Air (Prevention and Control of Pollution) Act, was enforced in the year ______

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

  1. 1982

  2. 1981

  3. 1968

  4. 1988

Show answer
Correct Option: B
Explanation:

The Air (Prevention and Control of Pollution) Act was enacted by the Parliament in 1981 for the control of air pollution and preservation of quality of air. This law has been enforced for sustaining the quality of environment.

Level of atmospheric $CO _2$ has increased in $2000$ from

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

  1. $280$ ppm to $360$ ppm

  2. $250$ ppm to $300$ ppm

  3. $300$ ppm to $340$ ppm

  4. $330$ ppm to $350$ ppm

Show answer
Correct Option: A
Explanation:

Carbon dioxide is the greenhouse gas. It means that it traps the insolation from the sun and does not allow them to be reflected back. The trapped insolation work in warming the overall temperature of the earth. The level of atmospheric CO$ _{2}$ was around 200 ppm during the ice age. It rose to 280 ppm during the warmer interglacial periods. Presently, in the Anthropocene era, due to the excessive CO$ _{2}$ releasing activities like fossil fuel burning, the level of CO$ _{2}$ has risen to 360 ppm.

Hence, the correct answer is '280 ppm to 360 ppm'