Chemical Engineering MCQs

Page No. 108

The material of construction of pressure mills used for squeezing out the juice from sugar cane is__________________?


aStainless steel


bCast iron


cMild steel


dMonel


View Answer Cast iron

Caustic soda is produced in a mercury cell having anode and cathode made respectively of moving mercury and_________________?


aMoving mercury and graphite


bGraphite and moving mercury


cMoving mercury and carbon


dMoving mercury and crimped steel wire



Most common stainless steel type 316, which is highly resistant to corrosion contains______________?


a16-13% Cr 10-14% Ni and 2-3% Mo


b20-22% Cr, and 8-10% Ni


c2-4% Cr, 22% NI and 2-4% Mo


dNone of these



Generation of heat by friction is an example of a/an ________________ change?


aIsothermal


b Irreversible


cAdiabatic


d Reversible


View Answer Irreversible

Galvanised iron is___________________?


aHarder


bProtected from rusting


cAlumina coated iron


dNone of these



The unit of fugacity is the same as that of the_________________?


aPressure


bTemperature


cVolume


dMolar concentration


View Answer Pressure

Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the ____________ equation?


aGibbs-Duhem


bMaxwell’s


cClapeyron


d None of these


View Answer Clapeyron

Galvanising is not a zinc diffusion process. A zinc diffusion process is termed as_____________________?


aSherardizing


bParkerising


cAnodising


dNone of these


View Answer Sherardizing

Cermets are ______________ materials?


aRefractory


bReinforced


cAbrasive


dFully metallic


View Answer Refractory

The chemical potential of a component (μi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by_________________?


a(∂E/∂ni)S, v, nj


b (∂G/∂ni)T, P, nj = (∂A/∂ni) T, v, nj


c(∂H/∂ni)S, P, nj


dAll (A), B. and (C)


View Answer All (A), B. and (C)

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