In which case the value of thermal conductivity drops with rising temperature
A.Methane
B.Benzene
C.Carbondioxide
D.Ammonia
E.None of the above
Category: Chemical Engineering Mcqs
If the absorptivity plus reflectivity of a body equals 1, then the body is known as
A.Black body
B.Grey body
C.Opaque body
D.White body
E.None of the above
Combustion reaction is
A.an endothermic reaction
B.an exothermic reaction
C.an autocatalytic reaction
D.a photochemical reaction
The operation of reactors used in the catalytic reforming of naphtha is favoured at
A.low pressure and low temperature
B.high pressure and high temperature
C.low pressure and high temperature
D.high pressure and low temperature
The particle mainly responsible for the stability of nucleus is
A.electron
B.proton
C.neutron
D.positron
Stanton number (NSt) for mass transfer is defined as
A.NSh/NReNSc)
B.NPeNSh
C.NSh/NSc
D.NShNSc
Any of the following could be the unit for Stefan Boltzmann constant EXCEPT :
A.W / m2k4
B.erg / cm-k4
C.cal / cm2-sec-k4
D.BTU/ft2-hr-R4
Which of the following is radioactive?
A.Deuterium
B.Tritium
C.Hydrogen
D.Helium
At absolute zero temperature
A.mass of the gas is zero
B.volume of the gas is zero
C.pressure of the gas is zero
D.all a b and c
Longest wavelength
A.Gamma rays
B.X-rays
C.Ultraviolet rays
D.Radio waves
E.Infrared rays
