Chemical Engineering MCQs

Page No. 735

Bromides contained in hot mother liquor is treated with ______________ during manufacture of bromine from sea water ?


aSO3


bCl2


cNH3


dSO2


View Answer Cl2

Process conditions in fermentator used for production of penicillin is____________________?


a25°C, 2 atm


b50°C, l0 atm


c30°C, 200 mm Hg (absolute)


d90°C, 45 atm


View Answer 25°C, 2 atm

Lime and soda ash are added to water to remove ___________________?


aBicarbonates & sulphates of calcium and magnesium


bUndesirable taste and odour


cBacteria


dIts corrosiveness



Air used in aerobic fermentation must be sterilized, otherwise the ___________________?


aRecovery of product will be difficult


bContamination of pure culture would result


cUniformity of product cannot be achieved


dNone of these



Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________?


aAs a lubricant


bAs a rust preventive


cIn hard water for cleaning of cloth


dAs a foam depressant in distillation column


View Answer As a lubricant

Prussian blue is chemically represented by__________________?


aFeO.TiO2


bCa SO4 . 2H2O


cFe4 [Fe (CN6)3]


dAlF3 . 3NaF


View Answer Fe4 [Fe (CN6)3]

Molasses is the starting material for the production of ___________________ ?


aAlcohol


bEssential oil


cFatty acids


dMassecuite


View Answer Alcohol

Insulin is an __________________ drug?


aAnti-malarial


bAnti-TB


cAntibiotic


dNone of these


View Answer Antibiotic

Solvay process as compared to dual process (i.e. modified Solvay process) ?


aCan use low grade brine


bHas less corrosion problems


cInvolves higher investment in NH3 recovery units than that for crystallisation units for NH4Cl


dBoth B. and C.


View Answer Both B. and C.

The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is _________________?


aDilute H2SO4


bOleum


cUltraviolet light


dNone of these


View Answer Oleum

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