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प्रश्न
Discuss the environmental effects of freons.
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उत्तर
- Freon gas is a very powerful greenhouse gas which means that it traps the heat normally radiated from the earth out into space. This causes the earth’s temperature to increase, resulting in rising sea levels, droughts. stronger storms, flash floods and a host of other very unpleasant effects.
- As freon moves throughout the air, its chemical ingredients causes depletion of ozone layer. Depletion of ozone increases the amount of ultraviolet radiations that reaches the surface of the earth, resulting in serious risk to human health. High levels of ozone, in turn, causes resoiratory problems and can also kill plants.
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संबंधित प्रश्न
Assertion: In mono haloarenes, electrophilic substitution occurs at ortho and para positions.
Reason: Halogen atom is a ring deactivator.
Chloroform reacts with nitric acid to produce ______.
Classify the following compound in the form of alkyl, allylic, vinyl, benzylic halides.
\[\ce{CH3 – CH = CH – Cl}\]
Classify the following compound in the form of alkyl, allylic, vinyl, benzylic halides.
C6H5CH2I
Classify the following compound in the form of alkyl, allylic, vinyl, benzylic halides.
CH2 = CH – Cl
Write a chemical reaction useful to prepare the following:
Freon – 12 from Carbon tetrachloride
Discuss uses of freons.
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Explain the preparation of the following compound.
Biphenyl
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