Related Questions

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)
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
A CO2
B N2
C O2
D CO
The rocks having alumina or clay as their major constituents are known as
A Siliceous rocks
B Argillaceous rocks
C Calcareous rocks
D Sedimentary rocks
The major constituents of glass are
A Lime, clay and soda ash
B Sand, lime and soda ash
C Silica, alumina and clay
D Silica, alumina and soda ash
Most of the atmospheric air pollutants are present in large quantity in
A Stratosphere
B Thermosphere
C Trophosphere
D Mesosphere
Which of the following pollutants is the major contributor to photochemical smog?
A Peroxynitrates
B Hydroperoxides
C Nitrogen dioxide
D Ozone
Often visible as smog , ozone is formed in the atmosphere form" hydrocarbons and nitrogen oxides , two major pollutants emitted by automobiles react with sunlight .
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere when
D ozone is formed in the atmosphere ,and when
Choose the correct option to replace the quotation part of each sentence. Often visible as smog, 'ozone is formed in the atmosphere from' hydrocarbons and nitrogen oxides, two major pollutants emitted by automobiles, react with sunlight.
A ozone is formed in the atmosphere from
B ozone is formed in the atmosphere when
C ozone is formed in the atmosphere, and when
D ozone, formed in the atmosphere when
What are the major pollutants of cigarette smoke?
A Carbon monoxide and dioxin
B Carbon monoxide and nicotine
C Carbon monoxide and benzene
D Dioxin and benzene
Which of the following constituents of coal is the most important in the production of coke?
A ash
B moisture
C Volatiles
D carbon

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