Chemical Engineering MCQs

Page No. 87

SO3 is absorbed using H2SO4 in a____________________?


aCast iron packed tower


bStainless steel plate tower


cPacked steel tower lined with acid proof bricks


dNone of these



Nitriding of steel is done (in electric furnace) at _____________ °C?


a510


b1720


c2210


d910


View Answer 510

Brass is an alloy of____________________?


aNickel and tin


bCopper and zinc


cTin and lead


dCopper, nickel and zinc


View Answer Copper and zinc

A hardened steel essentially contains___________________?


aSorbite


bTroostite


cMartensite


dNone of these


View Answer Martensite

Silicone rubber is not resistant to the corrosive action of____________________?


aSulphuric acid (10%)


bSulphuric acid (95%)


cEther


dBoth B. and C.


View Answer Both B. and C.

The fermenter used in the production of penicillin (by deep fermentation process) is made of___________________?


aGlass


bGlass lined steel


cHigh silicon cast iron


dPorcelain


View Answer Glass lined steel

Air-refrigeration cycle________________?


aIs the most efficient of all refrigeration cycles


bHas very low efficiency


cRequires relatively large quantities of air to achieve a significant amount of refrigeration


dBoth B. and C


View Answer Both B. and C

The heat treatment process applied to cold formed steel parts is ____________________?


aNormalising


bTempering


cArtificial ageing


dSolution annealing


View Answer Solution annealing

Which of the following is not an extensive property ?


aFree energy


bEntropy


cRefractive index


dNone of these


View Answer Refractive index

Refrigerants commonly used for domestic refrigerators are_________________?


a Ethyl chloride or methyl chloride


bFreon-12


cPropane


dNH3 or CO2



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