Chemical Engineering MCQs

Page No. 734

The terminology ‘BTX’ used in coal tar distillation industry refers to___________________?


aBenzol-toluol-xylol

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bBenzol-toluene-xylene

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cBenzene-toluol-xylol

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dBenzene-toluene-xylene

✓



Pitch (a product of coal tar distillation) is always mixed with creosote oil, when it is to be burnt in a burner, because__________________?


aIts calorific value is very less

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bTar neutralises the residual acids present in pitch

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cIt reduces viscosity and imparts fluidity for its transportation through pipelines at economic pressure drop

✓


dAll A, B. and C.

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Calcination of limestone is not done in a ______________ kiln for producing lime ?


aVertical shaft

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bRotary

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cFluidised bed

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dFixed bed

✓


View Answer Fixed bed

Graphite is a/an________________________?


aElectrical insulator

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bAllotrope of carbon

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cModerator used in nuclear reactor

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dBoth B. and C.

✓


View Answer Both B. and C.

The main component of Pyrex glass is_____________________?


aZinc

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bLead

✓


cBoron

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dSelenium

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View Answer Lead

Transportation of 35% oleum during winter suffers from the problem of freezing, which can be overcome by the addition of small quantity of_____________________?


aNitric acid

✓


bHydrochloric acid

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cMethyl alcohol

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dFormic acid

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View Answer Nitric acid

Finely ground calcium aluminate & silicate is a/an ____________________?


aCermet

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bCement

✓


cAbrasive

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dExplosive

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View Answer Cement

Molecular weights of polymers are in the range of__________________ ?


a102 – 102

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b105 – 109

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c102 – 107

✓


d109 – 1011

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View Answer 102 – 107

Mannheim furnace is used in the manufacture of_________________?


aHydrochloric acid

✓


bH2SO4 by Chamber process

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cCalcium carbide

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dCorundum

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View Answer Hydrochloric acid

High magnesia lime is added to hot sugar cane juice (during the manufacture of sugar) to__________________?


aFlocculate the impurities

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bFacilitate fast filtration

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cBoth A. and B.

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dNeither A. nor B.

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View Answer Both A. and B.

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