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A considerable part of the harmful ultra...

A considerable part of the harmful ultraviolet radiation of the sun does not reach the surface of earth. This is because in the upper atmosphere, there is a layer of

A

`CO_(2)`

B

`O_(3)`

C

`N_(2)`

D

`O_(2)`

Text Solution

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The correct Answer is:
B
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DINESH PUBLICATION-ENVIRONMENTAL CHEMISTRY-MULTIPLE CHOICE QUESTIONS
  1. Which is not a source of pollution ?

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  2. Which of the following will increase the BOD of water supply ?

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  3. A considerable part of the harmful ultraviolet radiation of the sun do...

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  4. Which of the following process does not increase the amount of CO(2) i...

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  5. Which of the following is not a vehicular pollutant ?

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  6. Which of the following is least pollutant ?

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  7. The gas released in Bhopal gas tragedy was

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  8. Which of the following acids is most abundant in acid rain ?

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  9. The major source of CO pollution is :

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  10. Which of the following is responsible for asthmatic attacks ?

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  11. The secondary precursors of photochemical smog are :

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  12. Which is a green house gas ?

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  13. An object is located at a height of 18 km from the surface of earth. ...

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  14. Freons are not recommended to be used in refrigerators because they ca...

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  15. Photochemical smog is formed due to presence of :

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  16. Incomplete combustion of petrol or diesel oil in automobile engines ca...

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  17. The concentration of fluoride, lead, nitrate and iron in a water sampl...

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  18. Atmosphere of big cities is polluted most by

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  19. Chief air pollutant which is likely to deplete ozone layer is

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  20. Which one is not a pollutant normally?

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