Chemical Engineering — Test 24
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Question 1
The life of a ball bearing is inversely proportional to________________?
Question 2
Corrosion rate cannot be lowered by reducing the ________________ of the corroding medium?
Question 3
The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe) ?
Question 4
In case of compression of one kg of air, the work done will be the least, when the value of polytropic index ‘n’ is______________________?
Question 5
Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is_______________?
Question 6
For grinding of softer materials, the grinding wheel should have _________________ grain size ?
Question 7
A furnace is made of a refractory brick wall of thickness 0.5 metre and thermal conductivity 0.7 W/m.°K For the same temperature drop and heat loss, this refractory wall can be replaced by a layer of diatomaceous earth of thermal conductivity 0.14 W/m.K and thickness ______________ metre?
Question 8
Production of one ton of paper in Indian paper industry consumes about ____________ kWh of electricity ?
Question 9
The laminar boundary layer thickness in zero pressure gradient flow over a flat plate along the x-direction varies as x0.5 while the thickness of turbulent boundary layer varies as (where, x = distance from the leading edge) ?
Question 10
Exposure to _________________ accelerates the degradation of plastics?