Chemical Engineering MCQs

Page No. 131

Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70% ?


aCast iron

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bSteel

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cNickel

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dKarbate

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View Answer Nickel

PVγ = Constant (where, γ = Cp/Cv) is valid for a/an ______________ process?


aIsothermal

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b Isentropic

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c Isobaric

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dAdiabatic

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View Answer Adiabatic

Iron alloyed with carbon upto 2% is called___________________?


aPig iron

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bWrought iron

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cHigh carbon steel

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dNone of these

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View Answer None of these

Mild steel is a/an ______________ steel?


aLow carbon

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bMedium carbon

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cHigh carbon

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dHigh alloy

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View Answer Low carbon

The expression for entropy change given by, ΔS = – nR ln (P2/P1), holds good for___________________?


a Expansion of a real gas

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b Reversible isothermal volume change

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cHeating of an ideal gas

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dCooling of a real gas

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Amount of energy that a material can absorb before its fracture is a measure of its _________________?


aToughness

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bResilience

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cMalleability

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dDuctility

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View Answer Toughness

Visco-elastic behaviour of materials which is time dependent is common in______________?


aPlastics

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bCrystalline solid

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cNon-crystalline solids

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dNon-crystalline organic polymer

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dW and dq are not the exact differential, because q and W are__________________?


aState functions

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b Path functions

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cIntensive properties

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dExtensive properties

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View Answer Path functions

Steel balls for ball bearings are generally made of ______________ steel?


aCast

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bStainless

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cFree carbon

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dCarbon chrome

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View Answer Carbon chrome

The damage/deterioration of metals by the ______________ action of fluids is called ‘erosion’?


aAbrasive

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bCorrosive

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cBoth A. & B.

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dNeither A. nor B.

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View Answer Abrasive

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