Heavy water is used in nuclear reactors to
A.cool the reactor
B.facilitate the release of neutrons
C.control fission
D.slow down the speed of neutrons
Category: Chemical Engineering Mcqs
Which dimensionless number correlates the relative thickness of the hydrodynamic and thermal boundary layers?
A.Prandlt number
B.Nusselt number
C.Crash off number
D.Mach number
A relationship between the temperature of a black body and the wavelength at which the maximum value of monochromatic emission power occurs, is established under
A.D’ lambert’s rule
B.Wein’s displacement law
C.Stefan-Bolzmann’s law
D.Kirchhoff’s law
E.Planck’s law
If the oxygen is entirely removed from a fire by smothering it with foram the combustion will
A.slow down
B.stop entirely
C.speed up
D.not be affected at all
The expression (A2-A1)/loge (A2/A1) for a hollow cylinder is known as
A.Logarithmic mean radius
B.Mean area of heat transfer
C.The rate of heat transfer
D.None of the above
The mass of helium is about
A.half of the mass of neutron
B.one-fourth of the mass of proton
C.twice the mass of deuterium
D.same as the mass of tritium
Phosporus is manufactured by heating in electric furnace a mixture of
A.phosphate rock and coke
B.phosphate rock and sand
C.phosphate rock coke and sand
D.phosphate rock coke and common salt
The most efficient equipment for removal of sub micron dust particles from blast furnace gas is
A.venturi scrubber
B.gravity settling chamber
C.electrostatic precipitator
D.cyclone separator
In a thermal power plant, cooling towers are used to cool
A.steam
B.condensed wate
C.circulating
D.All of the above
