Chemical Engineering MCQs

Page No. 700

The product obtained on mixing calcium oxide with water is called __________________?


aQuicklime

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bSlaked lime

✓


cMilk of lime

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dNone of these

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View Answer Slaked lime

Which of the following additives/water proofing agents is added to lower the hydrophilic (moisture loving) characteristic of cement ?


aXanthates

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bStearic acid

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cCalcium & aluminium stearate

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dFormic acid

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Sodium salt of higher molecular weight fatty acid is termed as the ______________________ soap?


aHard

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bSoft

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cMetallic

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dLubricating

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View Answer Soft

Pick out the wrong statement pertaining to solvent extraction of oil. Rate of extraction__________________?


aDecreases with decrease of thickness of the flakes

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bIncreases with the increasing flake size keeping the flake thickness constant

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cIncreases considerably with the rise of temperature

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dDecreases as the moisture content of flakes increases

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Hydrazine is largely used____________________?


aAs a starting material for ‘hypo’

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bIn photographic industry

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cAs rocket fuel

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dIn printing industry

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View Answer As rocket fuel

How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln ?


a500°C

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b 750°C

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c1000°C

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d1500°C

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View Answer 1000°C

______________ is produced using molasses as the starting raw material ?


aMethyl alcohol

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bEthyl alcohol

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cBenzol

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dDimethyl ether

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View Answer Ethyl alcohol

Acetone is produced by catalytic dehydrogenation of_________________?


aPhenol

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bNaphthalene

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cIsopropanol

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dEthyl benzene

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View Answer Isopropanol

In the production of soda ash by Solvay process, the by-product is____________________?


aCaCl2

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bNH4Cl

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cNH3

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dNaOH

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View Answer CaCl2

_____________ is used as a catalyst in fat splitting ?


aZnO

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bNi

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cV2O5

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dFeO

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View Answer ZnO

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