A. Stratosphere
B. Thermosphere
C. Troposphere
D. Mesosphere
Related Mcqs:
- 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) - High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes____________________?
A. Cancer
B. Silicosis
C. Respiratory disease (e.g., asthma)
D. Reduced crop yield - 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 - Atmospheric pollution caused by the exhaust gas of supersonic transport air-crafts is mostly in the atmospheric region called________________?
A. Thermosphere
B. Stratosphere
C. Troposphere
D. Mesosphere - Aerosols present in atmospheric air may be__________________?
A. Positively charged
B. Negatively charged
C. Neutral
D. Combination of all A., B. & C. - Carcinogenic air pollutants cause__________________?
A. Bone decay
B. Cancer
C. Asphyxiation (suffocation)
D. Anemia - 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 - ‘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 - 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 - Heat capacity of air can be approximately expressed as, Cp = 26.693 + 7.365 x10-3 T, where, Cp is in J/mole.K and T is in K. The heat given off by 1 mole of air when cooled at atmospheric pressure from 500°C to – 100°C is ____________________?
A. 10.73 kJ
B. 16.15 kJ
C. 18.11 kJ
D. 18.33 kJ
