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

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bCast iron

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cMild steel

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dMonel

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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

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bGraphite and moving mercury

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cMoving mercury and carbon

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dMoving mercury and crimped steel wire

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


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

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

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

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dNone of these

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


aIsothermal

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b Irreversible

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cAdiabatic

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d Reversible

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View Answer Irreversible

Galvanised iron is___________________?


aHarder

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bProtected from rusting

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cAlumina coated iron

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dNone of these

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


aPressure

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bTemperature

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cVolume

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dMolar concentration

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View Answer Pressure

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


aGibbs-Duhem

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bMaxwell’s

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cClapeyron

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d None of these

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View Answer Clapeyron

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


aSherardizing

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bParkerising

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cAnodising

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dNone of these

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View Answer Sherardizing

Cermets are ______________ materials?


aRefractory

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bReinforced

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cAbrasive

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dFully metallic

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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

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

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c(∂H/∂ni)S, P, nj

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dAll (A), B. and (C)

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

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