Which of the following methods results in book values greater than those obtained with the straight-line method?
A.Declining-balance method
B.Sum-of-the-years-digits method
C.Sinking-fund method
D.Multiple straight-line method
Category: Chemical Engineering Mcqs
An example of Bingham plastic is
A.gas
B.non colloidal solution
C.sewage sludge
D.rubber latex
Surface tension of water in contact with air at 20?C is
A.0.0731 1bf/ft
B.0.0731 N/m
C.0.0731 dyn/cm
D.0.731 kgf/m
Which of the following material has lest value of thermal diffusivity?
A.Lead
B.Mercury
C.Aluminium
D.Iron
E.Rubber
Manometers are important devices for measuring
A.absolute pressures
B.vacuum pressures
C.local atmospheric pressures
D.pressure differences
A body cools from 90?C to 80?C in 5 minutes. Under the same external conditions to cool from 80?C to 70?C the body will take
A.5 minutes
B.4 minutes
C.2.5 minutes
D.More than 5 minutes
E.Cannot be predicted
Steam traps are used to
A.Regulate the flow
B.Balance the pressure
C.Remove condensate
D.Add moisture
E.Heat steam
a micron is equal to
A.10-4 metres
B.10-5 metres
C.10-6 metres
D.10-8 metres
E.10-12 metres
The most suitable equipment for removing the fine dust particle (<1micron diameter) from air below its dew point will be
A.bag filter
B.electrostatic precipitator
C.cyclone separator
D.wet scrubber
Orthophosphoric acid forms
A.H3PO4.H2O in water solutions
B.(H3PO4)2.H2O in water solutions
C.(H3PO4)4.H2O in water solutions
D.(H3PO4)3.H2O in water solutions
