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प्रश्न
State two effects of ozone depletion.
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उत्तर
Effects of ozone depletion:
- UV rays of the Sun reach Earth and cause sunburn, premature ageing of the skin and skin cancer.
- The UV radiation can also damage several parts of the eyes, including the lens, cornea, retina, and conjunctiva.
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संबंधित प्रश्न
Write the harmful effects of ozone depletion.
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.
Give scientific reasons:
Ozone present in the stratosphere is called as “good ozone”.
Match the items in column I with the closely related ones in column II.
| Column I | Column II | ||
| (i) | Chlorofluorocarbons (CFCs) | (a) | Global warming |
| (ii) | Fly ash | (b) | Biodegradable |
| (iii) | Cow dung | (c) | Nuclear radiation pollutant |
| (iv) | CO2 and methane | (d) | Acid rain |
| (v) | Sulphur dioxide | (e) | Industrial waste |
| (vi) | Iodine-131 | (f) | Ozone depletion |
Number of Oxygen atom in Ozone.
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 spectrum of the light harmful to organism: ____________.
______ was signed in 1987 to control emission of ozone depleting substances.
What is exactly measured in Dobson units or DU?
