Environmental Studies

Air Pollution

2,298 Questions

Air pollution questions address the sources of emissions, indoor air quality, and the formation of photochemical smog. You will explore the impact of particulate matter, acid rain, and urban pollutants. This is a highly relevant subject for environmental studies and general awareness tests.

Photochemical smogParticulate matter emissionsAcid rain causesIndoor air pollutionAmmonia emissions

Air Pollution Questions

Multiple choice concept of social responsibility organization of commerce and management industrial pollution and degradation of environment environmental values and ethics industrial pollution accelerated with the start of industrial revolution social responsibility towards the environment

Carbon monoxide emitted by automobiles directly contributes to ____________.

  1. Water pollution

  2. Noise pollution

  3. Land pollution

  4. Air pollution
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Carbon monoxide is the colorless, odorless and tasteless gas that is slightly less dense than air. It is emitted by vehicles. It mixes with the air and causes air pollution on a large scale. Carbon monoxide is released through emissions through automobiles, thermal power plants,etc. 

Multiple choice business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

Which of the following is/are methods used in the factories for abatement of pollution ?

  1. Installation of tall chimneys

  2. Electrostatic precipitates

  3. Scrubbers

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Installation of tall chimneys in factories and fitting them with fitters and electrostatic precipitators.

Multiple choice business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

Which of the following is decreased to reduce the air pollution by automobiles.

  1. Potassium

  2. Sulphides

  3. Maganese

  4. Carbonates
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Government of India has adopted auto fuel policy to effectively cut down sulphur and nitrogen oxides in the automobiles exhausts.

Multiple choice business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

Identify the abatement of pollution.

  1. Use of CNG in automobile

  2. Green mufflers

  3. Sewage treatment plant

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Pollution abatement includes various strategies such as using cleaner fuels (CNG), creating green buffers (mufflers), and treating waste (sewage treatment plants).

Multiple choice business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

Which one of the following is a most efficient device to eliminate particulate matters from the industrial emissions?

  1. Cyclonic separators

  2. Trajectory separators

  3. Pyrolysis

  4. Incineration

  5. Electrostatic precipitator
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

Electrostatic precipitator os the most effective device used to remove particulate matter from the industrial emission. it removes the impurities (dust, fibres) by applying a high voltage electrostatic charge which precipitates the impurities on the charged plates.

Multiple choice business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

According to Central Pollution Control Board, air pollutants responsible for great harm have a size(in $\mu$m) of

  1. $1.0$ or less
  2. $1.5$ or less
  3. $2.5$ or less
  4. $5.2-2.5$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Particulate air pollutants are tiny particles or materials suspended in the atmosphere. These can be solids or liquid droplets.
According to Central Pollution Control Board (CPCB), Particulate matter having size 2.5 μm or less in diameter, are responsible for causing serious health hazards such as respiratory symptoms, irritations, damage to lungs, inflammations and even premature death.
So, the correct answer is '2.5 or less'.
Multiple choice business organisation and correspondence issues of the environment international efforts for conserving biodiversity effects of pollution on environment government efforts in pollution control

According to Central Pollution Control Board (CPCB) which particulate size in diameter (in micrometres) of the air pollutants is responsible for greatest harm to human health?

  1. 10 or less

  2. 2.5

  3. 25 or less

  4. 15 or less
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

According to Central Pollution Control Board (CPCB), particulate size 2.5 micrometers or less in diameter (PM 2.5) are responsible for causing the greatest harm to human health. These fine particulates can be inhaled deep into the lungs and can cause breathing and respiratory symptoms, irritation, inflammations and damage to the lungs and premature deaths.

Therefore, the correct answer is option B.

Multiple choice geography hydrologic cycle the atmosphere elements of weather and climate :humidity hydrologic cycle and its components elements of weather and climate : temperature

Acid precipitation is now regarded as a serious problem in some European and Asian countries. Its major cause or source is __________________.

  1. discharge of effluents into neutral or slightly alkaline land where the acidic components precipitate

  2. emissions of sulphur oxides and nitrogen oxides from thermal power plants and burning the fossil fuels; these oxides dissolve in atmospheric water vapour and fall back on earth as acid rain

  3. natural carbondioxide released during respiraion of living organisms dissolves in water, forming carbonic acid which is chief contributor to acidity in rain water

  4. chloroflurocarbons readily react with various chemicals near the earth's surface, producing acidic intermediates which cause acid precipitation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

Multiple choice biology blood circulatory system of human cardiac disorders cardiac regulation and disorders the blood system

Carbon monoxide is a pollutant because it

  1. Inhibits glycolysis

  2. Combines with haemoglobin

  3. Inactivates nerves

  4. Combines with oxygen
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When carbon monoxide (CO) is inhaled, it combines with the haemoglobin to form a stable compound called as carboxyhemoglobin (COHb). CO displaces oxygen attached to the carrier molecule, haemoglobin. The COHb bond is over 200 times stronger than oxygen's bond with haemoglobin. The strong COHb bond makes it difficult for the body to eliminate CO from the blood. At 30-50% COHb symptoms are nausea, severe headaches, dizziness and increased pulse and respiration. COHb levels over 50% cause progressive symptoms proceeding to loss of consciousness, collapse, convulsions, coma and finally death.

Therefore, the correct answer is option B.

Multiple choice physics pressure in fluids and atmospheric pressure common consequences of the atmospheric pressure atmospheric pressure and its consequences important points about atmospheric pressure

Which of the following pollutants does not affect lung function in normal adults but causes bronchoconstriction in asthmatics?

  1. ozone

  2. sulfur dioxide

  3. carbon monoxide

  4. None
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulfur dioxide does not affect lung function in normal adults but causes bronchoconstriction in asthmatics.

Multiple choice zoology human influences on the environment acid rain air pollution - effects and control air pollution and its effects

Smog is formed when fog is mixed with _______

  1. Sulphur

  2. Mercury

  3. Smoke

  4. Snow flakes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Smog is formed when fog is mixed with smoke. The presence of unburnt hydrocarbons in air when mixed with condensed water vapour forms a thick layer called smog. It lowers the visibility during winters and is an indication of air pollution.