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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