‘Particulate’ air pollutants are finely divided solids and liquids. Which of the following is not a „particulate‟ ?

Related Mcqs:

1. Very small amount of air pollutants are present in stratosphere also; though most of the atmospheric pollutants are present in the troposphere. Which of the following atmospheric pollutants does not cause the ozone layer depletion in atmosphere at tremendous rate ?

   A. CO B. SO2 C. NOx D. CFC (chloro fluoro carbons)...

2. Which of the following is the most efficient for removal of very finely divided suspended solids and colloidal matter from the polluted water stream ?

   A. Sedimentation tank B. Circular clarifier C. Mechanical flocculation D. Chemical coagulation...

3. As per the world health organisation (WHO) specification, the maximum permissible concentration (i.e., TLV) of particulate matter in air is _____________ μg/m3.(μg-microgram)?

   A. 10 B. 90 C. 800 D. 750...

4. In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is_______________?

   A. More B. Less C. Same D. Unpredictable; depends on the particular reaction...

5. Which of the following air pollutants is not toxic to vegetation i.e., doesn’t cause vegetation damage ?

   A. Smog & ozone B. Hydrogen fluoride & nitrogen oxides C. Sulphur dioxide & spray of weed killers D. Carbon monoxide...

6. Which of the following is the most major constituents of air pollutants ?

   A. Oxides of sulphur B. Oxides of nitrogen C. Carbon monoxide D. Hydrogen sulphide...

7. Carcinogenic air pollutants cause__________________?

   A. Bone decay B. Cancer C. Asphyxiation (suffocation) D. Anemia...

8. High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes____________________?

   A. Cancer B. Silicosis C. Respiratory disease (e.g., asthma) D. Reduced crop yield...

9. Most of the atmospheric air pollutants are present in large quantity in__________________?

   A. Stratosphere B. Thermosphere C. Troposphere D. Mesosphere...

10. Pollution by particulate matter emission in the atmosphere does not take place during metal____________________?

    A. Grinding B. Machining C. Cutting D. Polishing...