The rate of heat flow between a solid wall and a fluid (in contact with a solid wall) is given by
A.Wein’s Law
B.Kirchhoff’s law
C.Newton-Rikhman’s Law
D.None of the above
Category: Chemical Engineering Mcqs
The gas used in colour discharge tube is
A.Ar
B.Ne
C.Kr
D.Xe
For heavy duty industrial type electrostatic precipitator
A.from 30000 to 100000 volts dc is normally required
B.from 240 to 440 volts dc is normally required
C.from 13000 to 18000 volts dc is normally required
D.from 1000 to 5000 volts dc is normally required
For an ideal gas Charles law deals with the relationship between
A.pressure and volume at constant temperature
B.pressure and temperature at constant volume
C.volume and temperature at constant pressure
D.mass and volume at constant temperature
If there is no condensation of carrier steam in the steam distillation of high-boiling organic materials
A.both temperature and pressure must be fixed
B.either the temperature or the pressure may be fixed
C.the temperature is always more than 100?C at 1 atm
D.the temperature is always equal to 100?C at 1 atm
Corrosion is prevented or its rate is reduced by
A.increasing the resistance between abodic and cathodic area
B.decreasing anodic or cathodic polarization by increasing the diffusion of reactants and products
C.decreasing the resistance between anodic and cathodic areas
D.none of the above
Which of the following are generally diathermanous?
A.Solids
B.Liquids
C.Gases
D.All of the above
Ferritic stainless steel is characterized by
A.a simple hexagonal crystal structure
B.a body-centred cubic crystal structure
C.a face-centred cubic crystal structure
D.none of the above
The binary diffusivity in liquids varies almost as
A.T
B.T 3/2
C.T 2
D.T3
Iron sheets are galvanised to
A.increase lustre
B.prevent action of oxygen
C.prevent action of water
D.harden the surface
