Chemical Engineering MCQs

Page No. 784

Which of the following is not a ferromagnetic material ?


aNickel


bCobalt


cAluminium


dIron


View Answer Aluminium

Increasing the carbon content of steel_________________?


aReduces the upper shelf energy


bIncreasing the ductility transition temperature


cDecreases brittleness


dDecreases hardness



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


aCarbon


bManganese


cBoth A nor B


dNeither A nor B


View Answer Carbon

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


aBlack


bSilver grey


cGreen


dYellow


View Answer Silver grey

Out of the following, the most malleable material is________________?


aCopper


bAluminium


cWrought iron


dLead


View Answer Lead

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


aTensile strength


bCompressive strength


cYoung’s modulus


dThermal co-efficient of expansion



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


a1800


b2000


c2400


d3000


View Answer 2000

Oxyacetylene reducing flame is used while carrying out welding on__________________?


aAlloy steel


bGrey cast iron


cMild steel


dHigh carbon steel


View Answer Mild steel

Adhesives__________________?


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


bCan’t join two dissimilar metals


cCure instantaneously after application on a surface


dNone of these


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


bBlow off cock


cFusible plug


dSafety valve


View Answer Fusible plug

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