The quantity of electricity required to deposit one gram equivalent of any substance is
A.one coulomb
B.one faraday
C.one ampere
D.one microfaraday
Category: Chemical Engineering Mcqs
In the temperature of air above a pond is 8?C thermal conductivity of ice is 0.005 C.G.S. units, latent heat of fusion of ice is 79.9 cal/gram the density of ice is 1 gm/cu.m, the time taken for the formation of ice layer of 1 cm thickness is
A.200 seconds
B.100 seconds
C.12.5 seconds
D.10 seconds
E.None of the above
A sphere of radius 40 cm is lagged to a radius of 50 cm. The temperatures of outer and inner surfaces are 66?C and 235?C respectively. Thermal conductivity of logging per cm thickness is 0.7 kcal/m-hr?C. The rate of heat leakage will be
A.1.49 kcal/hr
B.298 kcal/hr
C.398 kcal/hr
D.500 kcal/hr
E.666 kcal/hr
Which sequence is followed for the flue-gas analysis in the Orsat gas analyzer?
A.O2 CO CO2
B.O2 CO2 CO
C.CO O2 CO2
D.CO2 O2 CO
Control of incomplete combustion loss would mean
A.decreasing the amount of excess air
B.increasing the amount of excess air
C.increasing the fuel/air ratio
D.to decrease moisture loss
Baffles are provided in heat exchangers to
A.Remove dirt
B.Increase heat transfer rate
C.Provide better mechanical strength
D.Reduce heat transfer rate
E.Reduce vibrations
Which of the following petroleum products has maximum kinematic viscosity at a given temperature?
A.Gasoline
B.Aviation turbine fuel
C.Light diesel oil
D.Furance oil
In a psychrometric chart the abscissa represents
A.Dry bulb temperature
B.Wet bulb temperature
C.Specific humidity
D.Relative humidity
E.Enthalpy
The compressibility factor of any gas
A.is always less than 1
B.is always equal to 1
C.is always greater than 1
D.may be less than equal to or greater than 1 depending on the nature of the gas
