Chemical Engineering MCQs

Page No. 763

Notched bar test is used for testing the _________________ of a material?


aImpact strength


bEndurance limit


cMachinability


dCorrosion resistance


View Answer Impact strength

The unit of gc is ___________________?


albm/lbf. ft/sec2


blbf/lbm. ft/sec2


cft/sec2


dlbm/lbf. sec2/ft


View Answer lbm/lbf. ft/sec2

One of the methods of purification of leach liquor is ion exchange, which involves_________________?


aExchange between two liquid phases


bExchange between a gaseous phase and a liquid phase


cExchange between a liquid phase and an organic resin phase


dExchange between a solid phase and a gas phase



Thermal equivalent of electrical power in practical calculation is _______________ kcal/kWh ?


a746


b3000


c1000


d550


View Answer 3000

The atmospheric temperature during melting of ice/snow (in the atmosphere)_________________?


aDecreases


bIncreases


cRemain same


dMay increase or decrease; depends on the altitude where snow melts


View Answer Decreases

_______________ is not a case hardening process ?


aCarburising


bNitriding


cCyaniding


dAnnealing


View Answer Carburising

Calorific value of ____________________ are almost same?


aLignite & anthracite coal


bLignite & coal gas


cPetrol & diesel


dCoal gas & natural gas


View Answer Petrol & diesel

Identify the correct statement with reference to the extractive metallurgy of aluminium ?


aThe electrolyte consists of molten Na3AlF6 with approximately 1 to 8% Al2O3


bApproximately 80% of the aluminium deposited on the cathode comes from cryolite


cSodium is deposited along with aluminium, but is immediately vaporised


dAnode effect sets in when the cryolite concentration goes below 40%.



The main charge in blast furnace is usually___________________?


aIron ore & coke


bIron ore, coke & air


cLimestone, coke & iron ore


dLimestone, sand & iron ore



Speed of a submarine in deep sea & that of an aeroplane is measured by a/an___________________?


aPitot tube


bHot wire anemometer


cRotameter


dStroboscope


View Answer Pitot tube

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