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प्रश्न
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.
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उत्तर
- The above phenomenon is the depletion of the Ozone Layer. Ozone layer depletion is a phenomenon in which certain gaseous compounds, such as chlorofluorocarbons (CFCs), break down into chlorine atoms, which in turn break down ozone (O3) into oxygen (O2) and O.
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- Use of CFCs in fire extinguishers and aerosol sprayers.
- Use of CFCs in refrigerators.
- Packing material styrofoam.
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- Depletion of the ozone layer can affect global rainfall, cause ecological disruptions, and reduce world food supplies.
- The depletion of the ozone layer allows UV radiation to reach the planet. UV radiation can cause skin cancer and harm to the eyes and immune system.
संबंधित प्रश्न
How does ozone affect any ecosystem?
Why is damage to the ozone layer a cause for concern? What steps are being taken to limit this damage?
The harmful radiations absorbed by the ozone layer are ______.
The prime source of chlorofluorocarbons is ______.
The gas A is used by most of the animals to obtain energy from food by the process of respiration. When A is acted upon by radiation X, it gets converted into another gas B which is an allotrope of A but poisonous when inhaled. B forms a kind of layer C in the upper atmosphere which absorbs radiations X coming from a source Y and prevent them from reaching the earth. Some chemicals Z released from the various devices on the earth are destroying the layer C slowly. In fact, a hole has already been formed in layer C over the area D of the earth.
(a) What are gases (i) A, and (ii) B? Write their molecular formulae.
(b) Name the layer C.
(c) What are (i) X, (ii) Y, and (iii) Z?
(d) Name the area D.
(e) Name any two human ailments which may be caused by X.
What would be the effects on widening of ozone hole?
Fill in the Blanks:
______ is manmade compounds that have been widely used as refrigerants and in spray propellants and foam blowing.
Name the chemicals responsible for destruction of the ozone layer. State the main chemical from these chemicals, which is responsible for more than 80% ozone depletion.
State the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].
Give balanced equation for the following conversion [one or two steps].
Oxygen to ozone gas by photolysis.
