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

On warming formic acid with ammoniacal silver nitrate, the product formed is 

  1. silver oxide

  2. metallic silver

  3. formaldehyde

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

Formic acid acts as a reducing agent. When heated with ammoniacal silver nitrate (Tollens' reagent), it reduces silver ions to metallic silver, forming a silver mirror.

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

The main reasons for deforestation are:

  1. rapid increase in the population of human beings and their livestock

  2. urbanization and human settlements

  3. cutting down of trees for obtaining fuel

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

The main reasons for deforestation are-rapid increase in the population of human beings and their livestock, urbanization and human settlements, cutting down of trees for obtaining fuel.

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

What are the advantages of chlorofluorocarbons? 

  1. Excellent refrigerants

  2. Very good propellants

  3. Useful in firefighting

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

The advantages of chlorofluorocarbons (CFCs) are given below: 

1. Excellent refrigerants: low boiling point, uncreative. 
2. Very good propellants: low toxicity
3. Useful in firefighting

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

The radiations from the sun is trapped by the earth's atmosphere. This effect is called :

  1. green house effect

  2. nursery effect

  3. trapping effect

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

The greenhouse effect is the process by which radiation from the sun is trapped by greenhouse gases in the Earth's atmosphere, warming the planet.

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

The Kyoto Protocol is protocol for :

  1. agreement to reduce the emission of greenhouse gases

  2. disagreement to reduce the emission of greenhouse gases

  3. agreement to increase the emission of greenhouse gases

  4. agreement to reduce the emission of greenhouse liquid
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The primary objective of the Kyoto Protocol is to reduce the emissions of greenhouse gases to combat global warming.