Chemical Engineering MCQs

Page No. 724

Hydrogenation of oil/fat does not_________________?


aImprove its resistance to rancid oxidation

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bRaise its melting point

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cRemove double bonds

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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

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bGreater tendency of decomposition at elevated temperature

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cHydrolysis tendency in presence of water

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dAll A, B. and C

✓


View Answer All A, B. and C

Fusion of limestone and ______________ produces high alumina cement?


aSand

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bBauxite

✓


cQuicklime

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dCalcite

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View Answer Bauxite

Basic oxide is absent in ___________________ glass?


aFlint

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bPyrex

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cQuartz

✓


dAll A, B. & C

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View Answer Quartz

Chloramines are used in water treatment for_____________________?


aDisinfection and control of taste & odour

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bCorrosion control

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cRemoving turbidity

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dControl of bacteria

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Ethanol amine is produced using ammonia and_________________?


aEthyl benzene

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bEthylene oxide

✓


cEthanol

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dEthane

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View Answer Ethylene oxide

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


aDensity difference

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bWetting characteristics

✓


cTerminal velocities

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dNone of these

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


aBakelite

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bNeoprene

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cTeflon

✓


dNylon-66

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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

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cPassing it through a bed of silica gel

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dNone of these

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


aCoke and sand

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bBrine and coal

✓


cCoke and caustic soda

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dNone of these

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View Answer Brine and coal

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