Chemical Engineering MCQs

Page No. 115

Wrought iron is ____________________?


aHigh carbon iron

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bHighly resistance to acid corrosion

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cMalleable & ductile; and hence is used for chain links, hooks & couplings

✓


dAn alloy of iron, chromium & carbon

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Alpha iron is stable ______________ °C?


aAbove 1403

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bUpto 910

✓


cAbove 1800

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dBetween 910 & 1403

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View Answer Upto 910

The softest material in Mho’s scale (for measuring hardness) is________________?


aTalc

✓


bGypsum

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cRubber

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dNone of these

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View Answer Talc

Cold work tool steel should have_________________?


aHigh toughness

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bPoor hardenability

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cHigh wear resistance

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dAll A., B. & C.

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View Answer High wear resistance

Zircaloy used as a fuel cladding material in a nuclear reactor (thermal) is an alloy of zirconium_______________?


aTin, nickel, iron and chromium

✓


bAnd graphite

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cAnd copper

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dNone of these

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An alloy of iron containing 4% carbon is called________________?


aHigh carbon steel

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bWrought iron

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cMild steel

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dNone of these

✓


View Answer None of these

_____________ is used for examining the macro-structure of a material?


aMetallurgical microscope

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bOptical microscope

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cX-rays

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dVisual inspection by naked eye

✓



Acetaldehyde is shipped in ____________ drums?


aCast iron

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bSteel

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cAluminium

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dEither B. & C.

✓


View Answer Either B. & C.

Rotary driers are generally made of_______________?


aCast iron

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bMild steel

✓


cHigh silicon iron (14% Si)

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dTin lined with refractory bricks

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View Answer Mild steel

Fatigue failure of a material may occur, when it is subjected to _____________ stress?


aFluctuating

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bTensile

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cCompressive

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dTorsion

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View Answer Fluctuating

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