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प्रश्न
Write the full form of CFCs.
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उत्तर
CFCs: Chlorofluorocarbons
APPEARS IN
संबंधित प्रश्न
You have been selected to talk on 'ozone layer and its protection" in the school assembly on 'Environment Day.'
(a) Why should ozone layer be protected to save the environment?
(b) List any two ways that you would stress in your talk to bring in awareness amongst your fellow friends that would also help in protection of ozone layer as well as the environment.
Write the full name of CFC.
Explain ozone layer, its depletion and effects of ozone depletion.
The following picture depicts a certain phenomenon
- Name the phenomenon and explain it.
- Enlist the sources that are responsible for the above mentioned phenomenon.
- List out the effects of the above phenomenon on humans.
Which Gas is present in large amount in the upper part of stratosphere.
Give reason for the following:
The formation of ozone involves a chemical reaction called photolysis.
Name or state the following:
The atom which reacts with oxygen to form ozone.
Very short answer type question
Where was the ozone hole discovered?
Which of the following may be a conclusion of the excessive exposure of humans to sun’s ultraviolet rays?
- Peptic ulcers
- Eye disease like cataract
- Damage to lungs
- Skin cancer
In 1987, the United Nations Environment Programme (UNEP) forged an agreement to freeze the production of a certain chemical to the year 1986 level. Name the chemical and the manufacturing companies m which this chemical was being mostly used.
In what way this chemical damage -
- the upper layers of the atmosphere and ultimately
- the organisms on the earth.
