Chemical Engineering MCQs

Page No. 765

Work hardenable alloy steel used to make the bucket wheel excavators, blades of bulldozers and other earth moving equipments contain iron, carbon and ___________________?


aManganese

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bSilicon

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cNickel

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dChromium

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View Answer Manganese

As per the Indian boiler regulation (IBR), the type of joint preferred for the circumferential joint is the _____________ joint ?


aButt

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bLap

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cWelded

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dNone of these

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View Answer Lap

Often earing defects are found during deep drawing operation, because the __________________?


aSurface finish of the sheet is poor

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bSheet material has been given substantial spring back

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cStarting sheet has planer anisotropy due to its texture

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dStarting sheet has normal anisotropy due to its texture

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Plants produce carbohydrates from the CO2 present in the atmosphere by_________________?


aPolymerisation

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bPhotochemical reaction

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cOxidation

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dNone of these

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. The effect of friction on the flow of steam through a nozzle is to decrease the _______________ of steam?


aWetness

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bMass flow rate

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cBoth A & B

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dNeither A nor B

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View Answer Both A & B

_________________ is not a heat treatment process ?


aCyaniding

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bParkerizing

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cAustempering

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dMartempering

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View Answer Parkerizing

______________ is not used as the control rod material in a nuclear reactor ?


aCobalt

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bHafnium

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cCadmium

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dBoron

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View Answer Cobalt

Which of the following can be manufactured using powder metallurgy techniques ?


aBrake linings

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bBearings

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cCarbide tool tips

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dAll A, B and C

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View Answer All A, B and C

Pick out the wrong statement about nucleate boiling ?


aBubble generation is by expansion of entrapped gas/vapour at small cavities in the surface

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bSurface temperature is greater than the saturation temperature of the liquid

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cHeat transfer from the surface of the liquid is less than that in film boiling

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dThe temperature is less than that of film boiling

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Latent heat of dry steam at atmospheric pressure is 539 Kcal/kg; which _____________ with increase in the pressure of steam?


aDecreases

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bIncreases

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cRemain same

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dMay increase or decrease

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View Answer Decreases

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