Chemical Engineering MCQs

Page No. 724

Hydrogenation of oil/fat does not_________________?


aImprove its resistance to rancid oxidation


bRaise its melting point


cRemove double bonds


dNone of these


View Answer None of these

Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its________________?


aPoor oxidation stability and high gum forming tendency


bGreater tendency of decomposition at elevated temperature


cHydrolysis tendency in presence of water


dAll A, B. and C


View Answer All A, B. and C

Fusion of limestone and ______________ produces high alumina cement?


aSand


bBauxite


cQuicklime


dCalcite


View Answer Bauxite

Basic oxide is absent in ___________________ glass?


aFlint


bPyrex


cQuartz


dAll A, B. & C


View Answer Quartz

Chloramines are used in water treatment for_____________________?


aDisinfection and control of taste & odour


bCorrosion control


cRemoving turbidity


dControl of bacteria



Ethanol amine is produced using ammonia and_________________?


aEthyl benzene


bEthylene oxide


cEthanol


dEthane


View Answer Ethylene oxide

Ore concentration by froth floatation utilises the ______________ of ore particles ?


aDensity difference


bWetting characteristics


cTerminal velocities


dNone of these



P.T.F.E. (Poly tetra fluoro ethylene) is commercially known as____________________?


aBakelite


bNeoprene


cTeflon


dNylon-66


View Answer Teflon

Wet chlorine gas produced during electrolysis of brine is dehydrated by__________________?


aSpraying 66° Be H2SO4 counter current to the flow of the gas


bPassing it through a bed of diatomaceous earth


cPassing it through a bed of silica gel


dNone of these



Commercial production of soda ash by Solvay process requires limestone, ___________________ as raw materials?


aCoke and sand


bBrine and coal


cCoke and caustic soda


dNone of these


View Answer Brine and coal

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