Chemical Engineering MCQs

Page No. 749

Baking soda is chemically represented by__________________?


aNa2CO3

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bNaHCO3

✓


cNa2CO3.H2O

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dNa2CO3.10H2O

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View Answer NaHCO3

Extraction of _________________ employs an electrolytic process ?


aAluminium

✓


bSilver

✖


cCopper

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dAll A, B. and C

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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

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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

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An oil is converted into fat by its___________________?


aHydrogenation

✓


bHydrolysis

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cHydrocracking

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dHydration

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View Answer Hydrogenation

______________________ of quicklime produces slaked lime ?


aHydration

✓


bDehydration

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cHydrogenation

✖


dNone of these

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View Answer Hydration

Dechlorination of treated water is necessary to __________________?


aRemove residual turbidity

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bReduce the bacterial load on filter

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cControl taste and odour

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dRemove chlorinous taste

✓



Presence of carbonaceous matter in the sewage____________________?


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

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bReduces sulphate ions to sulphides causing obnoxious smell

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cIncreases the quantity of chlorine used for its purification

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dAll A, B. and C.

✓


View Answer All A, B. and C.

Lithophane is ___________________?


aExplosive

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bWhite lead

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cFilter aid

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dZnS (white pigment)

✓


View Answer ZnS (white pigment)

Blue colour is imparted to glass by the addition of__________________?


aFeSO4

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bPbO

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cCaO

✓


dNaOH

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View Answer CaO

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