Smoking tendency of aromatics present in kerosine
A.remains constant with change in molecular weight
B.increases with increase in molecular weight
C.decreases with increase in molecular weight
Category: Chemical Engineering Mcqs
In the straight-line method for determining depreciation it is assumed that the value of the property
A.decreases exponentially with time
B.decreases logarithmically with time
C.decreases linearly with time
D.remains constant with time
Which of the following is a dynamic characteristic of instruments?
A.Time lag
B.Drift
C.Reproducibility
D.Span
Tricresyl phosphate (TCP) is made by reacting cresylic acid (CH3.C6H4.OH) with
A.phosphorus oxychloride
B.phosphorus trichloride
C.orthophosphoric acid
D.phosphorus pentoxide
The lightest gas which is non-inflammable is
A.H2
B.He
C.N2
D.Ar
The presence of impurities in iron
A.lowers the melting point
B.raises the melting point
C.has no effect on melting point
D.makes iron malleable
What energy transformation takes place when ice and salt mixture is converted into water
A.Heat energy to kinetic energy
B.Kinetic energy to heat energy
C.Heat energy to sensible heat
D.Heat energy to latent heat
E.Heat energy to potential energy
A certain reaction has arate expression -rA = 0.001 CA2, mol/cm3 min. If the concentration is to be expressed in mol/lit. and time in hours. The value of the rate constant would be
A.0.60 hr-1 (mol/l)-1
B.0.001 hr-1 (mol/l)-1
C.60.000 hr-1 (mol/l)-1
D.0.06 hr-1 (mol/l)-1
For flow of gas through a capillary according to Poiseuilles law the permeability
A.varies inversely as the gas viscosity
B.is proportional to the gas viscosity
C.varies as the square root of gas viscosity
D.varies as the square of the gas viscosity
The atomic number of an element corresponds to
A.its atomic volume
B.the number of electrons in its atom
C.the number of neutrons in the nucleus of its atom
D.its atomic weight
