Chemical Engineering MCQs

Page No. 125

The quantitative effect of temperature on chemical equilibrium is given by the____________________?


aVan’t-Hoff equation


bLe-Chatelier’s principle


cArrhenius equation


dNone of these


View Answer Van’t-Hoff equation

Thermoplastic resins are those polymers, which____________________?


aHas decreased plasticity at increasing temperature


bCannot be moulded


cEasily deform under pressure at high temperature


dNone of these



The ammonia synthesis reaction represented by N2 + 3H2 ⇌ 2NH3; ΔH = – 22.4 kcal, is__________________?


aEndothermic


bExothermic


cIsothermal


dAdiabatic


View Answer Exothermic

Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making___________________?


aNuts


bBolts


cChisels


dStuds


View Answer Chisels

Gibbs free energy at constant pressure and temperature under equilibrium conditions is___________________?


a


b0


cMaximum


dMinimum


View Answer Minimum

Consider the reaction, C + O2 ⇌ CO2; ΔH = – 94 kcal. What will be the value of ΔH for the reaction CO2 → C + O2 ?


a-94 kcal


b+94 kcal


c> 94 kcal


d< -94 kcal


View Answer +94 kcal

Centrifugal pump made of pyrex or glass can’t be used to pump___________________?


aMilk and fruit juices


bAlkaline solutions


cDilute H2SO4 at room temperature


dBrine


View Answer Alkaline solutions

If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as__________________?


aSolubility increases as temperature increases


bSolubility increases as temperature decreases


c Solubility is independent of temperature


d Solubility increases or decreases with temperature depending on the Gibbs free energy change of solution



Monel metal is an alloy of__________________?


aMolybdenum and nickel


bNickel and copper


cMolybdenum and aluminium


dMolybdenum and zinc


View Answer Nickel and copper

Which of the following is a low melting point metal ?


aStainless steel


bWrought iron


cTin


dCopper


View Answer Tin

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