Advertisements
Advertisements
प्रश्न
O2 is converted into O3 by the action of :
(a) infrared radiations
(b) ultraviolet radiations
(c) gamma radiations
(d) cosmic radiations
उत्तर
ultraviolet radiations
Oxygen is converted into ozone by ultraviolet radiations.
APPEARS IN
संबंधित प्रश्न
Give one harmful effect of CFC.
How does ozone layer protect us from harmful effects in the environment?
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.
How is ozone formed in the higher level of atmosphere?
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
‘There is a hole in the ozone layer’. What do you understand by this?
Give balanced equations for formation of ozone molecules from oxygen molecules. What type of reaction takes place, during the formation.
Give balanced equation for the following conversion [one or two steps].
A molecule of ozone to two molecules of oxygen gas.
Name or state the following:
An atmospheric pollutant responsible for both global warming and ozone depletion.
