Tag: geobiochemical cycle

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Questions Related to geobiochemical cycle

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

The greenhouse effect is useful because:

  1. it reduces water pollution

  2. it increases normal temperature of earth

  3. keeps the temperatures on our planet mild and suitable for living things

  4. reduces greenhouse gases
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The greenhouse effect is useful because trapping some energy keeps the temperatures on our planet mild and suitable for living things. Without its atmosphere and the greenhouse effect, the average temperature at the surface of the Earth would have been very low.

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

Greenhouse gases cause:

  1. ocean acidification

  2. ozone depletion

  3. smog pollution

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

Increases in the different greenhouse gases have other effects apart from global warming, including ocean acidification (by acid rain), smog pollution (contaminated particles in air) and ozone depletion as well as changes to plant growth and nutrition levels.

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

Which of the following is next to carbon dioxide for its contribution to global warming?

  1. $CFC$s
  2. $CO$

  3. Black carbon

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

Black carbon is second only to carbon dioxide for its contribution to global warming. Chemically, black carbon or BC is a component of fine particulate matter. Black carbon consists of pure carbon in several linked forms. It is formed through the incomplete combustion of fossil fuels, biofuel, and biomass, and is emitted in both anthropogenic and naturally occurring soot.

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

Which of the following is a factor that affect the degree to which any greenhouse gas will influence global warming?

  1. Its abundance in the atmosphere.

  2. How long it stays in the atmosphere.

  3. Its global-warming potential.

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

By increasing the heat in the atmosphere, greenhouse gases are responsible for the greenhouse effect, which ultimately leads to global warming. Three factors affect the degree to which any greenhouse gas will influence global warming: its abundance in the atmosphere, how long it stays in the atmosphere and Its global-warming potential.

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.