Chemical Engineering MCQs

Page No. 705

Catalytic oxidation-dehydrogenation of methyl alcohol produces__________________?


aFormaldehyde

✓


bPhenol

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cAcetone

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dMaleic anhydride

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View Answer Formaldehyde

A unit operation is exemplified by the process of ___________________?


aReduction

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bDesorption

✓


cNitration

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dCombustion

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View Answer Desorption

____________ is a polysaccharide?


aMaltose

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bStarch

✓


cSucrose

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dGlucose

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View Answer Starch

Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulfonic acid produces sodium dodecylbenzene sulphate, which is a/an?


aExplosive

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bSoap

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cDetergent

✓


dAnalgesic drug

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View Answer Detergent

Superior quality laboratory apparatus is made of the _____________ glass having low thermal co-efficient of expansion & high chemical resistance?


aFlint

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bSoda

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cPyrex

✓


dPotash

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View Answer Pyrex

Use of chlorine in the treatment of sewage_________________?


aHelps in grease separation

✓


bIncreases the biological oxygen demand (BOD)

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cCauses bulking of activated sludge

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dAids in flocculation

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CaO is called__________________?


aQuick lime

✓


bSlaked lime

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cLimestone

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dCalcite

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View Answer Quick lime

Dry ice (solidified CO2) is used for the___________________?


aStorage & shipment of frozen foods and ice-creams

✓


bLiquefaction of permanent gases

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cLiquefaction of natural gas

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dNone of these

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______________ is used as a flux in the extraction of iron from iron ore (haematite) in blast furnace?


aBauxite

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bLimestone

✓


cQuartz

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dManganese

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View Answer Limestone

At very high concentration of enzymes, the rate of fermentation chemical reaction is _____________ the concentration of reactants?


aIndependent of

✓


bDirectly proportional to

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cInversely proportional to

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dProportional to the square of

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View Answer Independent of

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