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प्रश्न
Describe the methods of saving the ozone layer.
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उत्तर
Methods to protect the ozone layer:
- Using alternative products such as HCFCs (hydrochlorofluorocarbons)
- Montreal Protocol, an international treaty, helps prevent ozone depletion.
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संबंधित प्रश्न
The depletion of ozone layer in the upper atmosphere is mainly due to the emission of :
(a) unburnt hydrocarbons
(b) chlorofluorocarbons
(c) greenhouse gases
(d) ultraviolet radiations
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.
Depletion of ozone in the ozone layer is a cause for our worry. Why?
Explain what is smog. Give its effects.
State two effects of ozone depletion.
‘There is a hole in the ozone layer’. What do you understand by this?
What is Ozone?
Ozone is abundant in this layer. Ozone heats this layer as it absorbs from incoming ultraviolet radiation from the sun:
Why was there a sharp in the amount of ozone in the atmosphere in 1980’s.
What is exactly measured in Dobson units or DU?
