NEET Chemistry - New - Environmental Chemistry

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Question - 1

Which oxide of nitrogen is not a common pollutant introduced into the atmosphere both due to natural and human activity?

  • A N2O
  • B NO2
  • C N2O5
  • D NO

Question - 2

Which of the following is a sink for CO?

  • A Microorganisms present in the soil
  • B Oceans
  • C Plants
  • D Haemoglobin

Question - 3

Which one of the following is not a common component of photochemical smog?

  • A Ozone
  • B Acrolein
  • C Peroxyacetyl nitrate
  • D Chlorofluorocarbons

Question - 4

Which one of the following statements regarding photochemical smog is not correct?

  • A Carbon monoxide does not play any role in photochemical smog formation.
  • B Photochemical smog is an oxidizing agent in character.
  • C Photochemical smog is formed through photochemical reaction involving solar energy.
  • D Photochemical smog does not cause irritation in eyes and throat.

Question - 5

Which one of the following statements is not true?

  • A pH of drinking water should be between 5.5 - 9.5
  • B Concentration of DO below 6 ppm is good for the growth of fish.
  • C Clean water would have a BOD value of less than 5ppm.
  • D Oxides of sulphur, nitrogen and carbon, are the most widespread air pollutants

Question - 6

Choose the correct words to fill in the blanks. Pollutant is defined as, a substance or an agent which causes pollution. ____(i)_____ and _____(ii)_____ are chemical pollutants. Pollutants can be _______(iii)______ which rapidly break down by ______(iv)_______ processes.

  • A i ii iii iv Heavy metals DDT degradable natural
  • B i ii iii iv Particulates Heavy metals non-degradable artificial
  • C i ii iii iv non-degradable petroleum degradable artificial
  • D i ii iii iv Micro-organisms natural gas non-degradable natural

Question - 7

The zone which extends above troposphere up to 50 km above sea level and contains dinitrogen, dioxygen, ozone and little water vapour is called:

  • A exosphere
  • B mesosphere
  • C ionosphere
  • D stratosphere

Question - 8

An object is located at a height of 18 km from the surface of earth. The object is located in:

  • A thermosphere
  • B mesosphere
  • C ionosphere
  • D stratosphere

Question - 9

The region which is greatly affected by air pollution is:

  • A troposphere
  • B stratosphere
  • C mesosphere
  • D thermosphere

Question - 10

Which of the following is not regarded as a pollutant?

  • A NO2
  • B CO2
  • C SO2
  • D CO