Tag: ways to reduce air pollution

Questions Related to ways to reduce air pollution

Carbon monoxide is naturally produced by oxidation of   X  , a gas present in swamp area while it can be produced by   Y     of fuels containing carbon.

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. X - $CO _{2}$, Y = complete combustion

  2. X - $CH _{4}$, Y = incomplete combustion

  3. X = C, Y = oxidation

  4. X = $CH _{4}$, Y = complete combustion

Show answer
Correct Option: B
Explanation:

Carbon monoxide is basically formed when an object is burned. Methane, which is a natural gas produces  CO after oxidation. Methane, produces less CO as compared to other units of gas. Incomplete combusion results in creation of poisonous CO. It occurs when supply of oxygen is poor. 

Green plants during day time absorb :

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. $O _{2}$

  2. $CO _{2}$

  3. $CO$

  4. $N _{2}$

Show answer
Correct Option: B
Explanation:

A plant, like an animal, needs energy. Plants have a process called photosynthesis to transform light energy into chemical energy (glucose sugar). Plants produce oxygen during photosynthesis, the oxygen is derived from the water it intakes and not from the carbon dioxide. 


The hydrogen from water, the carbon from carbon dioxide, and the oxygen from carbon dioxide go into the glucose compound  (C$ _6$H$ _{12}$O$ _6$)

Hence, the correct option is $\text{B}$

Governments have already taken action against air pollution by introducing ________.

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. wind energy

  2. solar energy

  3. renewable energy

  4. all of the above

Show answer
Correct Option: D
Explanation:

Governments have already taken action against air pollution by introducing green energy. Like wind energy, solar energy and renewable energy to minimize burning of  fuels which cause heavy air pollutions.

Solutions for air pollution is/are:

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. use public mode of transportation

  2. conserve energy

  3. concept of reduce, reuse and recycle

  4. all of the above

Show answer
Correct Option: D
Explanation:

Use of public mode of transportation, conservation of energy, the concept of Reduce, reuse and recycle are the solutions to air pollution.

The concept of  'Reduce, Reuse and Recycle' helps us to:

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. minimize the dependence on producing new things.

  2. minimize the dependence on producing old things.

  3. maximize the dependence on producing new things.

  4. All of the above.

Show answer
Correct Option: A
Explanation:

The concept of 'Reduce, reuse and recycle helps us to minimize the dependence on producing new things. 

Exhaust motor vehicle is the main source of:

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. manganese

  2. carbon monoxide

  3. sulfur dioxide

  4. nitrogen oxide

Show answer
Correct Option: B
Explanation:

Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol, biodiesel blends, diesel fuels, fuel oils, or coal. The largest part of most combustion gas is nitrogen. water vapour (except with pure-carbon fuels), and carbon dioxide (except for fuels without carbon); these are not toxic or noxious. A relatively small part of combustion gas is undesirable noxious or toxic substances, such as carbon monoxide (CO) from incomplete combustion.

If heat radiated from Earth's surface is retained, outcome will be:

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. formation of smog

  2. green house effect

  3. van der Waals forces of attraction among smoke particles

  4. all of these

Show answer
Correct Option: B
Explanation:

The greenhouse effect is the process by which radiation from a planet's atmosphere warms the planet's surface to a temperature above what it would be without its atmosphere. The exchange of incoming and outgoing radiation that warms the Earth is often referred to as the greenhouse effect because a greenhouse works in much the same way. Incoming UV radiation easily passes through the glass walls of a greenhouse and is absorbed by the plants and hard surfaces inside. Weaker IR radiation, however, has difficulty passing through the glass walls and is trapped inside, thus warming the greenhouse. This effect lets tropical plants thrive inside a greenhouse, even during a cold winter.

Carbon monoxide (CO) causes:

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. numbness of brain

  2. secretion of adrenaline

  3. weakening of the wall of alveoli

  4. risk of atherosclerosis

Show answer
Correct Option: D
Explanation:

Carbon monoxide is an air pollutant. It is found in cigarette smoke and emissions from motor vehicles, industrial processes, and poorly ventilated combustion sources.

Carbon monoxide could manifest its toxic effects on the heart and blood vessels in two ways, either by causing acute, short-term effects on oxygen delivery or by contributing to the development of cardiovascular diseases such as atherosclerosis. Atherosclerosis is a progressive disease characterized by thickening of the arteries and a buildup of deposits of fat, cholesterol, cells, and connective tissue in the inner lining of the blood vessels.

Adsorption method uses_____to separate pollutants from air.

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. funnel

  2. porous solid

  3. sand

  4. scrubber

Show answer
Correct Option: B
Explanation:

In adsorption method,the polluted air is passed through porous solid adsorbents kept in suitable containers. The gaseous pollutants are adsorbed at the surface of the porous solid and clean air passes through.

In absorbtion method, the polluted air containing gaseous pollutants is passed through:

chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

  1. porous material with very small holes

  2. flame combuster

  3. scrubber containing a suitable liquid absorbent

  4. strainer

Show answer
Correct Option: C
Explanation:

In absorption method,the polluted air containing gaseous pollutants is passed through a scrubber containing a suitable liquid absorbent. The liquid absorbs the harmful gaseous pollutants present in air.