Chemical Engineering MCQs

Page No. 163

Which of the following decreases with increase in pressure ?


aMelting point of ice


bMelting point of wax


cBoiling point of liquids


dNone of these


View Answer Melting point of ice

Near their critical temperatures, all gases occupy volumes _____________ that of the ideal gas?


aLess than


bSame as


cMore than


dHalf


View Answer Less than

The number of degrees of freedom for a mixture of ice and water (liquid) are ____________________?


a3


b2


c1


d0


View Answer 1

Boiling of liquid is accompanied with increase in the__________________?


aVapor pressure


bSpecific Gibbs free energy


cSpecific entropy


dAll (A), B. and (C)


View Answer Vapor pressure

Refrigeration capacity of a household refrigerator may be round about _____________ tons?


a0.15


b1.5


c4.5


d 6.5


View Answer 0.15

Which is not constant for an ideal gas ?


a(∂P/∂V)T


b(∂V/∂T)P


c(∂P/∂V)V


dAll (A), B. & (C)


View Answer (∂P/∂V)T

In an isothermal process on an ideal gas, the pressure increases by 0.5 percent. The volume decreases by about _____________ percent?


a0.25


b0.5


c0.75


d1


View Answer 0.5

COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about____________________?


a0.5


b3.5


c4.5


d8.5


View Answer 3.5

The unity of Planck’s constant ‘h’ in the equation, E = hv is____________________?


aJ/s


b J.S


c J/kmol


dkmol/J


View Answer J.S

The value of gas constant ‘R’ is__________________?


a1.987 cal/gm mole °K


b 1.987 BTU/lb. mole °R


cBoth A. and B


dNeither A. nor B


View Answer Both A. and B

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