Gypsum is added to clinker during cement manufacture to
A.decrease the rate of setting of cement
B.make the cement impervious
C.bind the particles of calcium silicate
D.to facilitate the formation of colloidal gel
Category: Chemical Engineering Mcqs
Which of the following has higher thermal conductivity as compared to the remaining?
A.Oxygen
B.Air
C.Hydrogen
D.Water
The rate of reaction of any component is a function of
A.temperature of the system only
B.pressure of the system only
C.composition of the component only
D.temperature pressure and composition
Which of the following has maximum melting point?
A.Wrought iron
B.White cast iron
C.Steel
D.Grey cast iron
Erosion is the deterioration of metals by
A.the corrosive action of fluids only
B.the abrasive action of fluids only
C.both corrosive action and abrasive action of fluids
D.none of the above
The resistance of a fluid to shear depends
A.upon cohesion only
B.upon its rate of transfer of molecular momentum only
C.upon its cohesion and rate of transfer of molecular momentum
D.upon other factors than its cohesion and rate of transfer of moleular momentum.
Octane number is an important test for
A.LPG
B.Kerosine
C.gasoline
D.light diesel oil
Combustion requires
A.a supply of oxygen
B.a combustible fuel
C.a source of heat energy
D.all of the above
