Chemistry - Environmental chemistry

Question - 1

The region of atmosphere nearest to the earth is

  • A troposphere
  • B stratosphere
  • C mesosphere
  • D NONE OF THE ABOVE

Question - 2

Which one of the following region contains 80% of the total mass of air and almost all of the water vapours?

  • A Stratosphere
  • B troposphere
  • C mesosphere
  • D NONE OF THE ABOVE

Question - 3

Which one of the following is not a gaseous air pollutant?

  • A H2S
  • B SO2
  • C NO2
  • D O3

Question - 4

Which one of the following is not a particulate pollutant?

  • A dust
  • B mist
  • C smoke
  • D CO

Question - 5

Which one of the following gases even at lower concentrations can cause temporary spasm of the smooth muscle of bronchioles, cough, shortness of breath, spasm of the larynx, acute irritation to the membranes of the eyes, resulting in tears and redness?

  • A CO
  • B SO2
  • C NO
  • D O3

Question - 6

The gases that produce photochemical smog are 

  • A oxides of nitrogen
  • B oxides of sulphur
  • C oxides of carbon
  • D NONE OF THE ABOVE

Question - 7

Which one of the following gases binds (about 200 times) to haemoglobin than oxygen?

  • A CO2
  • B CO
  • C NO
  • D NO2

Question - 8

CO is a natural constituent  of the atmosphere and is vital to all forms of plant life. It is present in the atmosphere to the extent of about

  • A 0.03% by volume of the atmosphere
  • B 0.01% by volume of the atmosphere
  • C 0.02% by volume of the atmosphere
  • D 0.04% by volume of the atmosphere

Question - 9

The gas which contributes the most to the green house effect is

  • A CO
  • B NO
  • C CO2
  • D O3

Question - 10

Which one of the following is not a green house gas?

  • A CH4
  • B Ozone 
  • C CF2Cl2
  • D NO
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