Chemical Engineering MCQs

Page No. 770

Liquor poisoning generally occurs due to the presence of _______________ in it?


aEthyl alcohol


bImpurities


cMethyl alcohol


dCarbonic acid


View Answer Methyl alcohol

Heat required to raise the temperature of a body by 1 °C is called its_______________?


aHeat capacity


bSpecific heat capacity


cThermal conductivity


dWater equivalent


View Answer Heat capacity

Solute atoms which cause yield point phenomenon in mild steel are/is_________________?


aAluminium


bBoron


cCarbon


dNitrogen


View Answer Carbon

‘Flare tower’ used in industry is meant for_____________________?


aVenting off (after burning) the excess inflammable/toxic gases at high pressure


bAbsorbing the pollutant gases from the furnace exhaust


cCooling of furnace exhaust gases


dNone of these



The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ?


aT


b1/T


cT2


d1/T2


View Answer T

Common salt is produced from sea water in India generally by the ________________ method?


aFreeze drying


bSolar evaporation


cElectrolytic


dNone of these


View Answer Solar evaporation

Which of the following phenomenon/ phenomena is/are diffusion controlled ?


aDislocation climb


bCross-slip


cTwinning


dRecrystallisation


View Answer Recrystallisation

Air/fuel ratio on molar (volume) basis for combustion of methane with theoretical quantity of air with be________________?


a9.5 : 1


b12.5 : 1


c15.5 : 1


d18.5 : 1


View Answer 9.5 : 1

Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles (i.e., froth), which will hold the ore particles, but it does not affect the floatability of minerals. Which of the following is not used as a frother ?


aCresylic acid


bXanthaies


cPine oil


dAll A, B. & C.


View Answer Xanthaies

While the thermosetting polymers are amorphous in nature, the thermoplastic polymers are either amorphous or crystalline. The crystalline polymers are characterized by the ?


aLow impact strength


bHigh flexibility


cBetter finish and surface appearance


dHigh plastic deformation


View Answer Low impact strength

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