Chemical Engineering MCQs

Page No. 719

Cement mainly contains_________________?


aCaO, SiO2, Al2O3


bMgO, SiO2, K2O


cAl2O3, MgO, Fe2O3


dCaO, MgO, K2O


View Answer CaO, SiO2, Al2O3

Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is ______________ °C?


a25


b60-70


c150-200


d250-300


View Answer 60-70

Function of sodium thiosulphate (hypo) in development of photographic film/plate is to______________?


aBrighten the faint images


bRemove metallic silver


cConvert silver chloride to silver


dRemove unexposed silver halide



Nitro-glycerine absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as controlled explosive called dynamite. The raw material used for its manufacture are glycerine, nitric acid and___________________?


aSulphuric acid


bPhosphoric acid


cHydrochloric acid


dHydrofluoric acid


View Answer Sulphuric acid

Neoprene is chemically known as___________________?


aPolybutadiene


bStyrene butadiene rubber (SBR)


cPolyurethane


dPolychlorophrene


View Answer Polychlorophrene

Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of_________________?


aCarbon


bArsenic


cLead


dSulphur


View Answer Arsenic

Fermentator temperature during production of alcohol from molasses is around ______________ °C?


a5


b30


c130


d300


View Answer 30

Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?


aDiaphragm electrolytic cell process


bMercury electrolytic cell process


cLime-soda process


dNone of these


View Answer Lime-soda process

Raw materials used for producing ________________ cement does not contain iron oxide?


aWaterproof


bSlag


cWhite


dPozzolan


View Answer White

Cooking liquor in case of sulphite process is _____________________?


aSodium sulphite and sodium bisulphite


bMagnesium sulphite and free SO2 in acid medium


cMagnesium sulphate and magnesium bicarbonate


dNone of these



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