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The upper stratosphere consists of consi...

The upper stratosphere consists of considerable amount of X. X protects us from the harmful ultraviolet radiations coming from the sun. These radiations cause skin cancer (melanoma) in humans. X is :

A

CO

B

`CO_(2)`

C

`O_(3)`

D

`O_(2)`

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VMC MODULES ENGLISH-ENVIRONMENTAL CHEMISTRY-Level-2
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  2. Photochemical smog :

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  3. The common components of photochemical smog besides ozone and nitric o...

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  4. Photochemical smog causes serious health problems such as :

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  5. Photochemical smog leads to :

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  6. The upper stratosphere consists of considerable amount of X. X protect...

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  7. Ozone in the stratosphere is formed in the following manner :

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  8. Which of the following statements are incorrect ?

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  11. The CFCs are used in refrigerators, air conditioners, in the productio...

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  15. The most serious water pollutants are the disease causing agents calle...

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  18. The amount of oxygen required by bacteria to break down the organic ma...

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  19. What is % by volume occupied by CO(2) in atmosphere ?

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  20. Depletion of ozone layer causes

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