Tag: chemistry

Questions Related to chemistry

The ash can cause _______ problems.

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. digestive 

  2. reproductory 

  3. respiratory 

  4. nervous 

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Correct Option: C
Explanation:

The ash can cause respiratory problems for young children, the elderly or those already with respiratory ailments.

The most problematic gases emitted in a volcanic eruption includes :

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. sulphur dioxide

  2. carbon dioxide

  3. hydrogen fluoride

  4. All of the above

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Correct Option: D

The ____ gets polluted by the presence of dust particles. 

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. air

  2. soil

  3. both $A$ and $B$

  4. none of the above

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Correct Option: A
Explanation:

The air gets polluted by the presence of dust particles.

Diesel vehicles pollute the environment largely through:
A) $CO$
B) $NO _x$
C) ParticulatesNOx

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. A & B

  2. B & C

  3. C & A

  4. A, B & C

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Correct Option: D
Explanation:

Diesel vehicles on burning forms all these as a product so they are major pollutants.

Forest fire produces ...... pollution.

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. air

  2. water

  3. sea

  4. soil

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Correct Option: A
Explanation:

A forest fire is a natural source of air pollution. 


Several major air pollutants can be released when a fire is caused in the forest. 

For example, carbon monoxide even in small quantities can cause several damage to the plant and animal life. Higher levels of carbon monoxide content reduce the oxygen-carrying capacity of the blood and cause breathing problems.

Thus, the correct answer is option A. 

Which one of the following is a  man-made source of air pollution?

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. Volcanic-eruption

  2. Automobile-exhaust

  3. Both A and B

  4. None of these

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Correct Option: B
Explanation:

Anthropogenic or man-made source of pollution is automobile exhaust. When fuel burns various gases like carbon dioxide, oxides of nitrogen, sulfur dioxide, carbon monoxide are released into the air.

Which of these is the major air pollutant in cities like Delhi and Kolkata?

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. Carbon monoxide

  2. Hydrocarbons

  3. Suspended particulate matter

  4. Oxides of nitrogen

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Correct Option: C
Explanation:

According to the air pollution data, the suspended particulate level SPM level is highest in Delhi and Kolkata with 70% residents suffering from respiratory disorders and lung cancers due to high SPM levels in populated areas.

Which of the following pollutants is not present in the vehicular exhaust emissions?

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. Lead

  2. Ammonia

  3. Carbon monoxide

  4. Particulate matter

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Correct Option: B
Explanation:

Oxides of carbon like $CO$ and $CO _2$, oxides of nitrogen, oxides of sulphur, lead, all are present along with particulate matter in the vehicular exhaust gases, but ammonia is not formed in these vehicular emissions.


Option B is correct.

Among the following, which will not help to reduce air pollution?

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. Burn household rubbish in incinerators

  2. Use catalytic converters on motor vehicles

  3. Fix electric precipitators to factory chimneys

  4. Ban smoking in public places such as in offices

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Correct Option: A
Explanation:

Some measures indeed help to reduce the stress on the environment like a use of catalytic converters in vehicles and ESPs in chimneys reduce the air pollutants going in an atmosphere. Smoking is injurious to the health of smoker and passive smokers too who have to inhale the smoke in their lungs causing diseases. Incinerators produce a lot of ash and residue which is not suitable for burning so it increases the air pollution.

The gasses released from vehicle exhausts are:
I. carbon monoxide
II. sulphur dioxide
III. oxides of nitrogen

water and air and their importance natural resources- air, water and land air around us air chemistry introduction to natural resources land

  1. I and II only

  2. I and III only

  3. II and III only

  4. I, II and III

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Correct Option: D
Explanation:

Vehicular exhaust consist of oxides of carbon mainly carbon dioxide and carbon monoxide, sulphur dioxide and various oxides of nitrogen present in the burning fuel.