Chemical Engineering MCQs

Page No. 749

Baking soda is chemically represented by__________________?


aNa2CO3


bNaHCO3


cNa2CO3.H2O


dNa2CO3.10H2O


View Answer NaHCO3

Extraction of _________________ employs an electrolytic process ?


aAluminium


bSilver


cCopper


dAll A, B. and C


View Answer Aluminium

At a given temperature, the equilibrium yield of SO3 obtained from the oxidation of SO2 is proportional to (where, P = pressure of the system) ?


aP


b√P


cP2


d1/P


View Answer √P

Economics of ‘Solvay Process’ depends upon the efficiency of __________________?


aCarbonating tower


bAmmonia recovery


cAmmonia recovery and size of the plant


dAmmoniation of salt solution



An oil is converted into fat by its___________________?


aHydrogenation


bHydrolysis


cHydrocracking


dHydration


View Answer Hydrogenation

______________________ of quicklime produces slaked lime ?


aHydration


bDehydration


cHydrogenation


dNone of these


View Answer Hydration

Dechlorination of treated water is necessary to __________________?


aRemove residual turbidity


bReduce the bacterial load on filter


cControl taste and odour


dRemove chlorinous taste



Presence of carbonaceous matter in the sewage____________________?


aCauses reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures


bReduces sulphate ions to sulphides causing obnoxious smell


cIncreases the quantity of chlorine used for its purification


dAll A, B. and C.


View Answer All A, B. and C.

Lithophane is ___________________?


aExplosive


bWhite lead


cFilter aid


dZnS (white pigment)


View Answer ZnS (white pigment)

Blue colour is imparted to glass by the addition of__________________?


aFeSO4


bPbO


cCaO


dNaOH


View Answer CaO

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