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.Management Sciences
Category: Chemical Engineering Basics
Corrosion rate cannot be lowered by reducing the ________________ of the corroding medium?
A. Concentration
B. Velocity
C. Temperature
D. None of these
Square steel key is normally strong in failure by shear & crushing. Keys are normally made of _______________ steel bars?
A. Hot rolled mild
B. Cold rolled mild
C. Forged
D. Machinable stainless
“Encyclopaedia of Chemical Technology” has been ____________________?
A. Authored by Kirk Othmer
B. Edited by Perry and Chilton
C. Edited by Kirk Othmer
D. Authored by Perry and Chilton
In a totally irreversible isothermal expansion process for an ideal gas, ΔE = 0, ΔH = 0. Then ΔQ and ΔS will be_______________?
A. ΔQ = 0, ΔS=0
B. ΔQ = 0, ΔS = +ve
C. ΔQ = 0, ΔS = -ve
D. ΔQ = +ve, ΔS= +ve
The rolling process cannot be used to produce______________________?
A. Plates
B. Rods
C. Tubes
D. Wires
Normalising of an object does not________________________?
A. Refine coarse grain structure obtained during hot working
B. Improve ductility
C. Improve yield strength
D. Improve mechanical properties
Which of the following is the most wear resistant grade of carbide used for the cutting tools ?
A. Aluminium carbide
B. Tungsten carbide
C. Nickel carbide
D. Iron carbide
Metalloids________________?
A. Are good conductor of heat & electricity
B. Act as electron donors with metals & as electron acceptor with non-metals
C. Are not necessarily solids at room temperature
D. Are compounds that exhibit both metallic & non-metallic properties to some extent and are
exemplified by elements like germanium, silicon & boron
______________ pipe is the most suitable for carrying sanitary drainage?
A. Stainless steel
B. Reinforced cement concrete
C. Cast iron
D. Asbestos cement
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