Chemical Engineering MCQs

Page No. 733

Mercury cells for caustic soda manufacture, compared to diaphragm cells___________________?


aRequire lower initial investment

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bRequire more power

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cProduce lower concentration NaOH

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dNone of these

✓


View Answer None of these

Sucrose content in the raw juice extracted from sugar cane is about _________________ percent?


a1 – 2

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b15 – 20

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c50 – 60

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d80 – 85

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View Answer 15 – 20

Builders are added in soap to act as___________________?


aCleaning power booster

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bAnti-redeposition agent

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cCorrosion inhibitor

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dFabric brightener

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Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda ?


aHigh cost of mercury

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bHigh specific gravity of mercury

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cNon-availability of high purity mercury

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dPollution of water stream by mercury

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Kaolin is a/an _____________________?


aRefractory material

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bSynthetic resin

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cArtificial abrasive

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dBlue pigment

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View Answer Refractory material

Phosphoric acid is prepared from_____________________?


aCryolite

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bChalcopyrite

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cRock phosphate

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dNone of these

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View Answer Rock phosphate

Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material ?


aSlag cement

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bGlasses

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cPorcelain/Potteries

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dTeflon

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View Answer Teflon

Phosphate rock is a raw material for the manufacture of____________________?


aPhosphoric acid

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bPhosphorous

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cSuperphosphates

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dAll A , B. and C

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View Answer All A , B. and C

Which of the following is the second major component of cement ?


aAl2O3

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bSiO2

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cCaO

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dFe2O3

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View Answer SiO2

Pick out the endothermic reaction out of the following ?


aC+ ½O2 = CO

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bCO + 3H2 = CH4 + H2O

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cCaCO3 = CaO + CO2

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dCO + ½O2 = CO2

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View Answer CaCO3 = CaO + CO2

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