Common Chemical Industries in Pakistan and Environmental Chemistry MCQs 2

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MCQ's with answers from chapter 15 and Chapter 16 Common Chemical Industries in Pakistan and Environmental Chemistry, chemistry book 1 for FSC pre engineering and pre medical for Board of Intermediate and Secondary education. Also For Entry Test Preparation for UET, NUST, PIEAS, GIKI, AIR, FAST, WAH University, UHS, other engineering Universities and Medical Colleges.

1. The pollutants released by jet aero planes in the atmosphere as fluorocarbons are called
   1. Photochemical oxidants
   2. Photochemical reductants
   3. Aerosols
   4. Physical pollutants
2. The chief pollutants which are responsible for ozone depletion
   1. SO2
   2. CO2
   3. CO
   4. chlorofluorocarbons
3. SO2 and NO2 cause pollution by increasing
   1. Acidity
   2. Alkalinity
   3. Buffer action
   4. neutrality
4. Which of the following is the secondary pollutant?
   1. CO
   2. PAN
   3. SO2
   4. aerosol
5. Ozone hole refers to
   1. Increased concentration of ozone
   2. Reduction in the thickness of ozone layer in troposphere
   3. Reduction in the thickness of ozone layer in stratosphere
   4. Hole in ozone layer
6. Photochemical smog is related to the pollution of
   1. Soil
   2. Water
   3. Noise
   4. air
7. CFCl3 is responsible for the decomposition of ozone to form oxygen. Which of the following reacts with ozone to form oxygen
   1. Cl2
   2. Cl-
   3. F-
   4. Cl radical
8. In which part of atmosphere, ozone layer is present?
   1. Stratosphere
   2. Troposphere
   3. Mesosphere
   4. thermosphere
9. The major source of CO pollution is
   1. Exhaust from automobiles
   2. Forest fires
   3. Volcanic eruptions
   4. Industrial process
10. Ammonium carbamate on dehydration gives
    1. NH3 gas
    2. Ammonium bicarbonate
    3. Its spreading power
    4. Its absorption

1. Aerosols
2. Chlorofluorocarbons
3. Acidity
4. PAN
5. Reduction in the thickness of ozone layer in stratosphere
6. Air
7. Cl radical
8. Stratosphere
9. Exhaust from automobiles
10. Uera(I think so) not confirmed