Chemical Engineering MCQs

Page No. 784

Which of the following is not a ferromagnetic material ?


aNickel

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bCobalt

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cAluminium

✓


dIron

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View Answer Aluminium

Increasing the carbon content of steel_________________?


aReduces the upper shelf energy

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bIncreasing the ductility transition temperature

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cDecreases brittleness

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dDecreases hardness

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The ‘transition temperature’ for ductile to brittle behavior of steel increases with increase in the _____________ content in steel?


aCarbon

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bManganese

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cBoth A nor B

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dNeither A nor B

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View Answer Carbon

Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is__________________?


aBlack

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bSilver grey

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cGreen

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dYellow

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View Answer Silver grey

Out of the following, the most malleable material is________________?


aCopper

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bAluminium

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cWrought iron

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dLead

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View Answer Lead

Steel rods are normally used for concrete reinforcement because concrete and steel have almost equal_________________?


aTensile strength

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bCompressive strength

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cYoung’s modulus

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dThermal co-efficient of expansion

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While the oxy-acetylene flame produces a temperature of 3200°C, the temperature produced by oxy-hydrogen flame is about _____________ °C ?


a1800

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b2000

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c2400

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d3000

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View Answer 2000

Oxyacetylene reducing flame is used while carrying out welding on__________________?


aAlloy steel

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bGrey cast iron

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cMild steel

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dHigh carbon steel

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View Answer Mild steel

Adhesives__________________?


aCan’t be used in the form of pressure sensitive tapes

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bCan’t join two dissimilar metals

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cCure instantaneously after application on a surface

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dNone of these

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View Answer None of these

Name the safety device used to protect the boiler, when the water level falls below a minimum level ?


aBlow down valve

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bBlow off cock

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cFusible plug

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dSafety valve

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View Answer Fusible plug

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