Chemical Engineering MCQs

Page No. 824

Bad odour in sanitary latrines is reduced by periodically sprinkling_____________________?


aBleaching powder

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bLime powder

✓


cAluminium sulphate

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dNone of these

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View Answer Lime powder

_______________ test determines the yield strength, Young’s modulus of elasticity, percentage reduction in area & percentage elongation of a material ?


aTensile

✓


bFatigue

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cImpact

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dNone of these

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View Answer Tensile

Material of construction of foundry crucible is _________________?


aLead

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bStainless steel

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cGraphite

✓


dCast iron

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View Answer Graphite

To counteract the bad effects of strain hardening on a cold formed part, it must be ______________________?


aTempered

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bNormalised

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cAnnealed

✓


dHardened

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View Answer Annealed

The thermodynamic law, PVy = constant, is not followed by the __________________?


aFree expansion of an ideal gas

✓


bAdiabatic expansion of steam in turbine

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cAdiabatic compression of air

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dIdeal compression of air

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Liquid nitrogen containers can be made from ___________________?


aFerritic stainless steel

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bHSLA steel

✓


cTitanium

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dAustenitic stainless steel

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View Answer HSLA steel

When the wavelength of incident X-rays increases, the angle of diffraction__________________?


aDecreases

✓


bIncreases

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cRemain constant

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dShows no systematic variation

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View Answer Decreases

________________ property of steel increases by addition of large amount of silicon in it?


aMechanical

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bMachining

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cMagnetic

✓


dRefractory

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View Answer Magnetic

In case of condensers & evaporators operating under given terminal conditions, LMTD (logarithmic mean temperature difference) for counter flow as compared to that for parallel flow is__________________?


aMore

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bLess

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cEqual

✓


dMuch more

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View Answer Equal

At the point of boundary layer separation in fluid flow, the _____________________?


aShear stress is maximum

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bVelocity gradient is flat

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cDensity variation is maximum

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dShear stress is zero

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