Chemical Engineering MCQs

Page No. 786

Viscoelastic behaviour is observed in _______________________ materials?


aNon-crystalline organic polymeric

✓


bCeramic

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cAll crystalline

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dAll amorphous

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Load cells used for the measurement of weight has______________?


aCompact & rugged construction with an accuracy of 0.1 to 1%

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bNo moving parts and incurs negligible deflection under load

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cProvision of thermal compensation and is hermetically sealed

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dAll A, B & C

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View Answer All A, B & C

The order of a chemical reaction____________________?


aCan be determined only experimentally

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bCan be determined from the stoichiometry of the reaction

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cCannot be zero

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dCan be fractional

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With increase in temperature, the electrical conductivity of a _________________ decreases ?


aSemi-conductor

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bMetal or alloy

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cDielectric

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dNone of these

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View Answer Semi-conductor

Which of the following if present in iron ore, enhances its value ?


aAlumina

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bAlkali oxide

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cLime & Magnesia

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dNone of these

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View Answer Lime & Magnesia

Out of the following the refractive index is the highest for____________________?


aGlass

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bDiamond

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cBrine

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dKerosene

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View Answer Diamond

In a good rimming steel_________________________?


aCarbon and silicon should be low

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bSilicon should be low but carbon should be high

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cBoth silicon & carbon should be high

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dSilicon should be high but carbon should be low

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Volumetric composition of flue gas analysed with the Orsat apparatus is : CO2 = 12%, O2 = 8%, CO = nil, N2 = 80%. This flue gas composition indicates that_________________?


aPure oxygen has been used for combustion

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bNitrogen percentage in the fuel is very high

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cExcess air has been used for combustion

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dHydrogen is not present in the fuel

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_________________ furnace is generally used in the non-ferrous foundries ?


aDirect arc

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bIndirect arc

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cResistance

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dInduction

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View Answer Indirect arc

The amount of different substances produced, when the same quantity of electricity is passed through different solutions are proportional to their__________________?


aEquivalent weight

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b(Equivalent weight)2

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cMolecular weight

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d(Molecular weight)2

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View Answer Equivalent weight

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