Chemical Engineering MCQs

Page No. 740

Separation of fresh water from sea water can be done by the _______________ operation ?


aOsmosis

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bReverse osmosis

✓


cAbsorption

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dAdsorption

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View Answer Reverse osmosis

Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like_________________?


aHigh cost

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bFragile nature

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cEasy poisoning tendency

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dAll A, B. and C.

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View Answer All A, B. and C.

Presence of H2S in raw water (to be chlorinated) results in the_____________________?


aReduced softening capacity of zeolite

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bIncreased dosage of chlorine to provide a disinfecting residual in the water

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cEasy removal of its hardness

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dNone of these

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______________ is an ore of lead?


aQuartz

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bGalena

✓


cSiderite

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dChalcopyrite

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View Answer Galena

Hydrogen gas is not produced commercially (for nitrogenous fertiliser manufacture) by _____________________?


aIron-steam reaction

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bElectrolysis of water

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cSteam reforming of naphtha

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dIts cryogenic separation from coke oven gas

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View Answer Iron-steam reaction

The most commonly used substance to speed up the sedimentation of sewage is___________________?


aLime

✓


bSulphuric acid

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cChlorine

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dSodium bisulphite

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View Answer Lime

Which of the following is not produced commercially from sea water ?


aMagnesium & potassium compounds

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bCommon salt

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cBromine

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dIodine

✓


View Answer Iodine

Oleum produces fumes of_____________________?


aSO2

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bH2SO4

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cSO3

✓


dSO2 + H2SO4

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View Answer SO3

Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in______________________?


aPyrolysis of oil

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bSintering of porous catalyst

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cHydrogen embrittlement

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dAll A, B. and C.

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View Answer All A, B. and C.

Rancidity of the fatty oil can be reduced by its__________________?


aDecoloration

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bHydrogenation

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cOxidation

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dPurification

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View Answer Hydrogenation

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