Which of the following is most readily corroded in air?
A.Copper
B.Iron
C.Tin
D.Silver
Category: Chemical Engineering Mcqs
The specific weight (? ) of a substance
A.is its weight per unit volume
B.is its mass per unit volume
C.does not change with location
D.is not a convenient property when dealing with fluid statics.
In the atmospheric distillation of crude petroleum
A.the content of sulphur increases from lighter fraction to heavier ones with the residue having the highest concentration of sulphur
B.the content of sulphur deccreases from lighter fraction to heavier ones with the residue having the lowest concentration of sulphur
C.the content of nitrogen decreases from lighter fraction to heavier ones with the residue having the lowest concentration of nitrogen
D.none of the above
Azeotropes
A.are mixtures with constant boiling point at the specified pressure
B.obey Raoults law at all temperature
C.are mixtures of partially miscible liquids
D.none of the above
Which type of heat exchanger an automobile radiator is?
A.Parallel flow type
B.Counter flow type
C.Recuperator type
D.Regenerator type
E.Cross flow type
The unit of power is
A.W only
B.J/s only
C.J/s and W both
D.J
Under which of the following conditions is the law PV = RT obeyed most closely by a real gas?
A.High pressure and high temperature
B.Low pressure and low temperature
C.High pressure and low temperature
D.Low pressure and high temperature
The pressure thermometer bulb should have a
A.large area
B.large mass
C.large specific heat
D.low thermal conductivity
Four rods with different radii ‘r’ and length ‘l’ are used to connect to reservoirs of heat at different temperature. Which one of them with conduct most heat?
A.r = 2 cm, l = 2m
B.r = 1 cm, l = 1m
C.r = 2 cm, l =
D.r =
The general formula of naphthenes is
A.CnH2n+2
B.CnH2n-2
C.CnH2n-6
D.CnH2n
