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)
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
The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is
A Less
B More
C Equal
D May be less or more depending on temperature
A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump.
A Sump
B Volute
C Vacuum
D Submerged
In low carbon steels, ________ raises the yield point and improves the resistance to atmospheric corrosion.
A Sulphur
B Phosphorus
C Manganese
D Silicon
Brass parts with high residual tensile stress at the surface are susceptible to season cracking (i.e. spontaneous cracking occuring on exposure to atmospheric corrosion), if its zinc percentage is more than
A 5
B 10
C 20
D 35
Atmospheric corrosion of metals result from their
A Slow oxidation
B Fast oxidation
C Fast hydration
D Slow dehydration
Corrosion involves exchange of electrons in __________ corrosion.
A Chemical
B Electrochemical
C Both A & B
D Neither A nor B
Which of the following types of nuclear reactors is most prone to radioactive hazards?
A Gas cooled reactor
B Molten Sodium Reactor
C Boiling water reactor
D Pressurised water reactor
Which of the following areas or regions is most prone to earthquakes?
A Deccan Plateau
B Ganga\u00adBrahmaputra Valley
C Plains of northern India
D Western Ghats

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