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प्रश्न
Select the correct answer from the following statement:
The gas which in presence of U.V. light gives two atoms of the same gas.
विकल्प
Oxygen
Ozone
Carbon dioxide
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उत्तर
Oxygen
APPEARS IN
संबंधित प्रश्न
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.
Briefly explain depletion of ozone layer and its effects.
Explain ozone layer, its depletion and effects of ozone depletion.
‘There is a hole in the ozone layer’. What do you understand by this?
How is ozone formed in the upper atmosphere? State its importance. What is responsible for its depletion? Write one harmful effect of ozone depletion.
Give reason for the following:
Destruction of ozone layer is harmful for both humans and plants.
Long answer type question
Montreal protocol is an essential step. Why is it so?
Acid rain is caused by the oxides of ______.
Gas A, found in the upper layers of the atmosphere, is a deadly poison but is essential for all living beings. The amount of this gas started declining sharply in the 1980s.
- Identify Gas A. How is it formed at higher levels of the atmosphere?
- Why is it essential for all living beings? State the cause for the depletion of this gas.
Why was there a sharp in the amount of ozone in the atmosphere in 1980's.
