Tag: environmental impact: global warming

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Questions Related to environmental impact: global warming

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

Greenhouse effect causes:

  1. melting of ice caps

  2. rise in the sea level

  3. submerging of low lying areas

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

The greenhouse effect causes the melting of the ice caps and releases other greenhouse gases, $CH _4$ which is heating up the environment and causing the greenhouse effect again. 

Option A is correct.

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

Global warming causes:
1) an increase in the sea level
2) the melting of ice at mountain peaks
3) a decrease in food production by plants

  1. I only

  2. I and II only

  3. II and III only

  4. I, II and III
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The global warming effect causes the rise in the global temperature resulting in melting of polar ice caps and rise in sea level.This rise in temperature changes the rain cycle and it decreases the crop production.

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

The release of carbon dioxide into the air causes:

  1. acid rain

  2. eutrophication

  3. global warming

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

The trapping of infrared radiations from the atmosphere and not reflecting it back due to higher levels of Carbon dioxide as a major pollutant which traps radiations. This effect causes the rise in the global temperature resulting in melting of polar ice caps and rises in the sea level.

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

Gases referred as 'greenhouse gases' are:

  1. $CO _2,\ O _2,\ NO _2,\ NH _3$
  2. chlorofluorocarbon, $CO _2,\ NH _3,\ N _2O$
  3. $CH _4,\ N _2,\ CO _2,\ NH _3$
  4. chlorofluorocarbon, $CO _2,\ CH _4,\ N _2O$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The most significant greenhouse gases are water vapour (H$ _2$O), carbon dioxide (CO$ _2$), methane (CH$ _4$) and nitrous oxide (N$ _2$O). Chlorofluorocarbons (CFCs), once used as refrigerants and aerosol propellants until they were phased out by international agreement, are also greenhouse gases.

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

Cause:

Global warming
Effect:
Ice at North and South poles may melt causing sea-level to rise and floods to occur.

Which of the following can prevent the effect from happening?

  1. Deforestation

  2. Use of unleaded petrol

  3. Use of leaded petrol

  4. Both (A) & (B)
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Using unleaded petrol reduces the emission of harmful pollutants, though global warming is primarily driven by CO2. Among the choices, it is the only one that represents a move toward cleaner energy compared to deforestation or leaded petrol.

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

Which of the following is not a green house gas?

  1. Carbon dioxide

  2. Water vapour

  3. Oxygen

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

Green house gases (GHGs) are gaseous components of the atmosphere that contribute to the 'green house effect'. 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. Some greenhouse gases occur naturally in the atmosphere, while others result from human activities. Naturally occurring greenhouse gases include water vapour, carbon dioxide, methane, nitrous oxide and ozone. Certain human activities, however, add to the levels of most of these naturally occurring gases.

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

Deforestation leads to an increase in the amount of $CO _2$ in the air:

  1. because the number of trees which consume $CO _2$ is increased
  2. because the number of trees which consume $CO _2$ is reduced
  3. because the number of trees which fix $CO _2$ is reduced

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

Deforestation leads to an increase in the amount of $CO _2$ in the air because the number of trees which consume $CO _2$ is reduced.