Chemical Engineering MCQs

Page No. 809

The following type of bonding is strongly directional in solids ?


aVander Waal’s

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bIonic

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cMetallic

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dCovalent

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View Answer Covalent

Diffusion co-efficient of a metal in a solid solution depends upon its ?


aComposition

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bTemperature

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cBoth A. & B.

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dNeither A. nor B.

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View Answer Both A. & B.

Mild steel has _______________ crystal lattice structure?


aFace centred cubic (fcc)

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bBody centred cubic (bcc)

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cOrthorhombic

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dCubic

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Wrought iron is never shaped by__________________?


aCasting

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bCold working

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cForging

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dWelding

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View Answer Casting

Reduction in the grain size reduces the _________________ of the material?


aFatigue resistance

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bTensile strength

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cCreep resistance

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dAll A, B. & C

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View Answer All A, B. & C

Lead is poured into the joints between two ___________________ pipes?


aCast iron

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bSteel

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cConcrete

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dPlastic

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View Answer Cast iron

The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be_______________?


aParabolic

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bHyperbolic

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cStraight line

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dNone of these

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View Answer Parabolic

Out of the following, the ________________ pipe has the least corrosion resistance?


aMild steel

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bCopper

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cCast iron

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dWrought iron

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View Answer Wrought iron

An alloy of Fe – 0.4 % C is__________________?


aCast iron

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bHypo-eutectoid steel

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cHyper-eutectoid steel

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dEutectoid steel

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View Answer Hypo-eutectoid steel

Thermit welding uses the following energy source ?


aElectrical energy

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bChemical energy

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cEnergy of high velocity electrons

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dHeat generated by friction

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View Answer Chemical energy

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