Tag: air and water pollution control

Quizzes (7) Questions (151)

Questions Related to air and water pollution control

Multiple choice biology air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Global warming leads to:

  1. increase in actual temperature of earth

  2. decrease in actual temperature of earth

  3. no change in temperature

  4. change in pressure
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Global warming is the term used to describe a gradual increase in the average temperature of the Earth's atmosphere and its oceans, a change that is believed to be permanently changing the Earth's climate.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

__________ used as refrigerants and aerosol propellants are also greenhouse gases.

  1. Perfluorocarbons

  2. Sulfur hexafluoride

  3. Chlorofluorocarbons (CFCs)

  4. None of above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorofluorocarbons (CFCs), once used as refrigerants and aerosol propellants until they were phased out by international agreement, are also greenhouse gases. They damage the ozone layer of the atmosphere. 

Multiple choice biology air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Greenhouse effect is a major cause of:

  1. global warming

  2. reduction of temperature

  3. acid rain

  4. all of above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A greenhouse gas is any gaseous compound in the atmosphere that is capable of absorbing infrared radiation, thereby trapping and holding heat in the atmosphere. By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Full synthetic oils are derived from crude oil or byproducts through a chemical process rather than the __________ process used for conventional oil.

  1. distilliation

  2. fractional distillation

  3. vacum distillation

  4. none of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Synthetic oil is a lubricant consisting of chemical compounds that are artificially made. Synthetic lubricants can be manufactured using chemically modified petroleum components rather than whole crude oil, but can also be synthesized from other raw materials. Full synthetic oils are derived from crude oil or byproducts through a chemical process rather than the distillation process used for conventional oil. The resulting synthetic oil has a more consistent molecular size and therefore tends to have somewhat more uniform properties.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following is the natural sources of the most volatile hydrocarbon?

  1. Methane

  2. Ethane

  3. Ester

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Methane is a chemical compound with the chemical formula $C{ H } _{ 4 }$ (one atom of carbon and four atoms of hydrogen). It is a group 14 hydride and the simplest alkane, and is the main component of natural gas.In its natural state, methane is found both below ground and under the sea floor. When it finds its way to the surface and the atmosphere, it is known as atmospheric methane

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following is not the source of hydrocarbon as a pollutant?

  1. Man-made sources

  2. Sources of methane

  3. Fly ash

  4. Oxide of sulphur
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Oxides of sulphur do not combine with any other molecule to give hydrocarbon, while manmade sources like industries, vehicles release hydrocarbon into the atmosphere.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Example of primary pollutant:

  1. $SO _2$
  2. $CO _2$

  3. Hydrocarbon
  4. $CO$
Reveal answer Fill a bubble to check yourself
A,C,D Correct answer
Explanation

Primary Pollutants are the ones which are injected into the atmosphere directly.  Examples include:

  1. Carbon monoxide (CO)
  2. Oxides of nitrogen ($N{ O } _{ x },NO$ )
  3. Sulfur oxides ($S{ O } _{ x }$)
  4. Volatile organic compounds (VOCs)
  5. Particulate matter (dust, ash, salt particles)

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

The principal source of volatile organics (Hydrocarbons) is:

  1. transportation

  2. industrial processes

  3. stationary fuel combustion

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

Ground-level ozone is formed when volatile organic compounds (VOCs), also known as hydrocarbons, and nitrogen oxides ($N{ O } _{ x }$) interact in the presence of sunlight. Sources of VOC and $N{ O } _{ x }$ emissions include:

large industry such as chemical manufacturers, and combustion sources such as power plants burning fossil fuels.

small industry such as gasoline-dispensing facilities, auto body paint shops, and print shops