Chemical Engineering MCQs

Page No. 733

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


aRequire lower initial investment


bRequire more power


cProduce lower concentration NaOH


dNone of these


View Answer None of these

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


a1 – 2


b15 – 20


c50 – 60


d80 – 85


View Answer 15 – 20

Builders are added in soap to act as___________________?


aCleaning power booster


bAnti-redeposition agent


cCorrosion inhibitor


dFabric brightener



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


bHigh specific gravity of mercury


cNon-availability of high purity mercury


dPollution of water stream by mercury



Kaolin is a/an _____________________?


aRefractory material


bSynthetic resin


cArtificial abrasive


dBlue pigment


View Answer Refractory material

Phosphoric acid is prepared from_____________________?


aCryolite


bChalcopyrite


cRock phosphate


dNone of these


View Answer Rock phosphate

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


aSlag cement


bGlasses


cPorcelain/Potteries


dTeflon


View Answer Teflon

Phosphate rock is a raw material for the manufacture of____________________?


aPhosphoric acid


bPhosphorous


cSuperphosphates


dAll A , B. and C


View Answer All A , B. and C

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


aAl2O3


bSiO2


cCaO


dFe2O3


View Answer SiO2

Pick out the endothermic reaction out of the following ?


aC+ ½O2 = CO


bCO + 3H2 = CH4 + H2O


cCaCO3 = CaO + CO2


dCO + ½O2 = CO2


View Answer CaCO3 = CaO + CO2

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