Related Questions

Fluorosis is caused due to the presence of excessive amount of __________ in drinking water.
A Mercury
B Lead
C Fluoride
D Arsenic
Presence of high concentration of ozone and smog in atmospheric air causes the
A Embrittlement & decrease of folding resistance of paper
B Cracking of rubber products
C Fading of dye on textiles
D Damage of electrical insulator on high tension power line
Atmospheric pollution caused by the exhaust gas of supresonic transport air-crafts is mostly in the atmospheric region called
A Thermosphere
B Stratosphere
C Troposphere
D Mesosphere
Moist atmospheric air at high temperature (e.g., in summer) having high concentration of sulphur dioxide causes
A Fading of dyes on textiles
B Corrosion, tarnishing & soiling of metals
C Reduced strength of textiles
D All of the above
High concentration of carcinogenic hydrocarbon pollutants in atmospheric air causes
A Cancer
B Silicosis
C Respiratory disease (e.g., asthma)
D Reduced crop yield
High concentration hydrocarbon pollutants in atmospheric air causes
A Cancer
B Silicosis
C Respiratory diseases (e.g.asthma)
D Reduced crop yield
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)
From pollution control point of view, the maximum permissible concentration of sulphur dioxide in atmospheric air is about __________ ppm.
A 1
B 5
C 50
D 500
Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm.
A 50
B 1000
C 5000
D 10000
Which structure connects one bone to another bone?
A Cartilage
B Tendons
C Ligaments
D None of the above

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