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Which of the following, present in the s...

Which of the following, present in the stratosphere prevents 99.5 percent of the sun’s harmful UV radiations from reaching the earth’s surface ?

A

water vapour

B

dinitrogen

C

ozone

D

dioxygen

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VMC MODULES ENGLISH-ENVIRONMENTAL CHEMISTRY-Level-1
  1. Which of the following statements regarding the TROPOSPHERE is true ?

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  2. The stratosphere :

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  3. Which of the following, present in the stratosphere prevents 99.5 perc...

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  4. Which of the following are gaseous air pollutants ?

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  5. Which of the following are particulate pollutants ?

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  6. ‘X’ is a gas that is poisonous to both plants and animals. The followi...

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  7. Which of the following statements is NOT true ?

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  8. The main constituents of air O(2) & N(2) react with each other :

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  9. NO(2) is oxidised to nitrate ion NO(3)^(-) which when washed into soil...

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  10. In automobile engines (at high temperature) when fossil is burnt, dini...

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  11. Which of the following statements regarding the effects of NO(2), fals...

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  12. Which of the following statements regarding hydrocarbons false ?

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  13. Y’ is a colourless, odourless gaseous air pollutant. It is highly pois...

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  14. A gas ‘G’ combines with haemoglobin to form carboxyhaemoglobin. In blo...

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  15. Carbon monoxide gas combines with haemoglobin to form carboxyhaemoglob...

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  16. The oxygen deficiency caused due to carbon monoxide poisoning results ...

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  17. In pregnant women, who have the habit of smoking, the increased CO lev...

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  18. CO(2) is released into the atmosphere by : I. respiration II. B...

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  19. Which of the following statements regarding CO(2) true ?

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  20. With the increased use to fossil fuels, a large amount of CO(2) gets ...

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