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

Related Mcqs:

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

   A. Dust & mists B. Smoke & fumes C. Photochemical smog & soot D. None of these...

2. 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...

3. Which of the following is not a source of ozone emission in the atmosphere?

   A. Refrigerators B. Xerox machines C. Dermatological photo-therapy equipments D. High voltage electrical equipments...

4. The density of the gases (present in air) decreases with increasing altitude to such an extent, that about 70% of the mass of atmospheric air is found in the lower 5 km. of the atmosphere. This lower region of atmosphere is called the_________________?

   A. Ionosphere B. Troposphere C. Stratosphere D. None of these...

5. The main industrial source of emission of hydrogen sulphide air pollutant is________________?

   A. Petroleum refineries B. Coal based thermal power plants C. Pulp and paper plant D. Metallurgical roasting & smelting plant...

6. 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)...

7. Green house gases blanket/block the infrared radiation from earth’s surface to the atmosphere leading to its progressive warming up. Which of the following gases does not exhibit green house effect ?

   A. CO2 B. H2 C. SO3 D. N2...

8. Which of the following plants does not emit appreciable amount of SO2 in atmosphere ?

   A. Thermal power plant B. Petroleum refinery C. Nitric acid plant D. Sulphuric acid plant...

9. A considerable part of the harmful ultraviolet radiation of the sum does not reach the earth surface, because of the fact that, there is a layer of _____________ high above earth’s atmosphere, which absorbs it?

   A. Hydrogen B. Carbon dioxide C. Ozone D. None of these...

10. Thermal pollution due to excessive heat & temperature in the working place causes__________________?

    A. Reduction in working efficiency of manpower B. Fatigue C. High breathing rate D. All A., B. & C....