Thermodynamics for Chemical Mcqs


Q.  The expression for entropy change given by, ΔS = – nR ln (P2/P1), holds good for___________________?

a. Expansion of a real gas
b. Reversible isothermal volume change
c. Heating of an ideal gas
d. Cooling of a real gas


ANSWER: See Answer
 
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MCQs:  If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the _________________?
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MCQs:  For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be__________________?
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MCQs:  For an ideal gas, the internal energy depends upon its ____________ only?
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MCQs:  The temperature at the eutectic point of the system is the _____________ temperature that can be attained in the system?
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MCQs:  The value of Cp & Cv respectively for monatomic gases in Kcal/kg Mole.°K are________________?
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MCQs:  Which of the following represents the Virial equation of state ?
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MCQs:  For organic compounds, group contribution method can be used for the estimation of _____________________?
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MCQs:  _______________ increases with increase in pressure?
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MCQs:  The enthalpy change when ammonia gas is dissolved in water is called the heat of___________________?
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MCQs:  Trouton’s ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K) ___________________?
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MCQs:  Joule-Thomson co-efficient depends on the_____________________?
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MCQs:  Which of the following processes cannot be made reversible even under ideal condition of operation ?
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MCQs:  “Law of corresponding states” says that___________________?
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MCQs:  Internal energy of an element at 1 atm and 25° C is ____________ kcal/kg.mole?
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MCQs:  For a constant volume process _____________ by the system is used only to increase the internal energy?
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MCQs:  A change in state involving a decrease in entropy can be spontaneous, only if ____________________?
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MCQs:  Specific _____________ does not change during phase change at constant temperature and pressure?
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MCQs:  High _____________ is an undesirable property for a good refrigerant?
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MCQs:  Which of the following liquid metals has the highest thermal conductivity ?
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MCQs:  If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) ⇌ C3H8(g) will be _____________ Kcal?
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