Oleum may be rephrsented by the formula
A.H2SO4
B.H2SO3
C.H2S2O6
D.H2S2O7
Category: Chemical Engineering Mcqs
Which sample of concrete may be expected to have highest value of thermal conductivity
A.Dry concrete
B.Dry concrete having 0.4% rein-forcement
C.Concrete having 10% moisture by volume
D.Concrete having 10% meisture by volume and 0.4% reinforcement
E.Concrete having 10% moisture by volume and 0.6% reinforcement
A chemical reaction occurs when the energy of the reacting molecules is
A.less than the activation energy of the reaction
B.equal to the activation energy of the reaction
C.more than the activation energy of the reaction
D.equal to or more than the activation energy of the reaction
In a reversible reaction a catalyst
A.increases the rate of the forward reaction only
B.increases the rate of the forward reaction to a greater extent than that of the backward reaction
C.increases the rate of the forward reaction and decreases that of the backward reaction
D.increases the rate of forward and backward reaction equally.
The mass of a meson with charge +e is
A.equal to that of a proton
B.equal to that of an electron
C.275 times that of an electron
D.1/1850 of the mass of an electron
The continuity equation in fluid mechanics is a mathematical statement using
A.the principle of conservation of momentum
B.the principle of conservation of energy
C.the principle of conservation of mass
D.the principles of conservation of mass and energy
For a given particle size the collection efficiency of a cyclone separator
A.will be increased at higher pressure drops
B.will be decreased at higher pressure drops
C.will not be affected by changing pressure drop
D.none of the above
Liquid column manometers are used to measure
A.differential pressures of greater than 30 psi
B.differential pressures of less than 30 psi
C.high vacuums
D.atmospheric pressure
Insulation in cavity walls is
A.Water
B.Air
C.Cork
D.Wood
E.None of the above
