Chemical Engineering MCQs

Page No. 205

As per Kirchhoff s equation, the heat of reaction is affected by the__________________?


aPressure


bVolume


cTemperature


dMolecularity


View Answer Temperature

A perfectly insulated container of volume V is divided into two equal halves by a partition. One side is under vacuum, while the other side has one mole of an ideal gas (with constant heat capacity) at 298 K. If the partition is broken, the final temperature of the gas in the container___________________?


aWill be greater than 298 K


bWill be 298 K


cWill be less than 298 K


dCannot be determined



The density of a gas ‘X’ is twice that of another gas ‘Y’. If the molecular weight of gas ‘Y’ is ‘M’; then the molecular weight of the gas ‘X’ will be________________?


a2M


bM/2


cM


d M/4


View Answer 2M

Air at a temperature of 20°C and 750 mm Hg pressure has a relative humidity of 80%. What is its percentage humidity? Vapour pressure of water at 20°C is 17.5 mm Hg?


a80.38


b80


c79.62


d78.51


View Answer 79.62

Clausius Clapeyron equation applies to the _____________ process?


aSublimation


bMelting


cVaporisation


dAll A., B. & C.


View Answer All A., B. & C.

80 kg of Na2SO4 (molecular weight = 142) is present in 330 kg of an aqueous solution. The solution is cooled such that. 80 kg of Na2SO4 .10H2O crystals separate out. The weight fraction of Na2SO4 in the remaining solution is_________________?


a0.00


b 0.18


c0.24


d1.00


View Answer 0.18

The viscosity of water at room temperature may be around one ___________________?


aCentipoise


bPoise


cStoke


dBoth B. & C.


View Answer Centipoise

_________________ chart is a graph related to Antoine equation ?


aOstwald


b Cox


cMollier’s


d Enthalpy-concentration


View Answer Cox

The molar composition of a gas is 10% H2, 10% O2, 30% CO2 and balance H2O. If 50% H2O condenses, the final mole percent of H2 in the gas on a dry basis will be_______________?


a10%


b5%


c18.18%


d20%


View Answer 20%

The atomic weight of helium is 4 times that of hydrogen. Its diffusion rate as compared to hydrogen will be _____________ times?


a1/2


b 4


c√2


d 1/4


View Answer √2

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