Chemical Engineering MCQs

Page No. 809

The following type of bonding is strongly directional in solids ?


aVander Waal’s


bIonic


cMetallic


dCovalent


View Answer Covalent

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


aComposition


bTemperature


cBoth A. & B.


dNeither A. nor B.


View Answer Both A. & B.

Mild steel has _______________ crystal lattice structure?


aFace centred cubic (fcc)


bBody centred cubic (bcc)


cOrthorhombic


dCubic



Wrought iron is never shaped by__________________?


aCasting


bCold working


cForging


dWelding


View Answer Casting

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


aFatigue resistance


bTensile strength


cCreep resistance


dAll A, B. & C


View Answer All A, B. & C

Lead is poured into the joints between two ___________________ pipes?


aCast iron


bSteel


cConcrete


dPlastic


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


bHyperbolic


cStraight line


dNone of these


View Answer Parabolic

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


aMild steel


bCopper


cCast iron


dWrought iron


View Answer Wrought iron

An alloy of Fe – 0.4 % C is__________________?


aCast iron


bHypo-eutectoid steel


cHyper-eutectoid steel


dEutectoid steel


View Answer Hypo-eutectoid steel

Thermit welding uses the following energy source ?


aElectrical energy


bChemical energy


cEnergy of high velocity electrons


dHeat generated by friction


View Answer Chemical energy

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