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Standard XII
Chemistry
Anomalous Behaviour of Oxygen
Ozone present...
Question
Ozone present in stratosphere comes from.
A
Photosynthetic activity from earth
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B
Reaction between nitrogen oxides and
O
2
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C
Photochemical interactions of oxygen molecules
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D
Microbial decay on earth
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Solution
The correct option is
D
Photochemical interactions of oxygen molecules
Ozone formation is due to the photochemical reaction of oxygen atoms.
So, the correct option is '
Photochemical interactions of oxygen molecules
'.
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Similar questions
Q.
Nitrogen oxides released in the stratosphere cause ozone depletion due to
Q.
Complete the following passage(s) with an
appropriate word/term to be filled in the blank spaces.
Troposphere, Stratosphere, Triatomic, Ozonosphere, Ozone shield, Diatomic, Ozone, Equator, Poles, Reactive.
Ozone is a __(1)__molecule made up of three atoms of oxygen,
O
3
. The normal oxygen molecule is __(2)__. Oxygen is essential for all aerobic forms and combustion activities. __(3)__ is a deadly poison. Very little of it is present in the lower part of the atmosphere called __(4)__. A good quantity of ozone is present in the stratum of the atmosphere called __(5)__. It lies above the troposphere and extends between 16-50 km of height above __(6)__ and 8-30 km above __(7)__. Here, it is formed in situ from oxygen by the action of high energy ultraviolet rays. The latter split some oxygen molecules into nascent or atomic oxygen (O). Atomic oxygen is highly __(8)__. It combines with (
O
2
) to form ozone. The area of the stratosphere which is rich in ozone is called the ozone layer or ____(9)____. It is also called __(10) __.
Q.
Assertion :Statement I : Ozone is a tri-atomic molecule of oxygen. Reason: Statement II : Ozone is concentrated mainly in stratosphere.
Q.
Ozone is formed in stratosphere by action of ultravoilet radiations on oxygen.
Q.
Read the following statements and select the correct option.
Statement 1: Ozone layer present in the stratosphere protects the living organisms from harmful UV rays coming from the sun by absorbing nearly all of them.
Statement 2: Ozone formed in the troposphere by photochemical reactions as a result of human activities which is harmful to all living organisms.
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