Chemical Engineering MCQs

6108 MCQs  (Page 536 of 611)

Attempt Chemical Engineering Quiz
______________ equation gives the effect of temperature on heat of reaction ?
A. Kirchoff’s
B. Maxwell’s
C. Antoine
D. Kistyakowsky
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Addition of a non-volatile solute to a pure solvent ____________________?
A. Increases its freezing point
B. Increases its boiling point
C. Decreases its freezing point
D. Both b. and c.
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If the partial pressure of the solvent in the vapor phase is equal to the vapor pressure of the solvent at that temperature, then the system is said to be at its___________________?
A. Bubble point
B. Saturation temperature
C. Dew point
D. Both b. and c.
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Saturated solution of benzene in water is in equilibrium with a mixture of air and vapours of benzene and water at room temperature and pressure. Mole fraction of benzene in liquid is xB and the vapour pressures of benzene and water at these conditions are pv B and pv w respectively. The partial pressure of benzene in air-vapour mixture is_________________?
A. Pvb
B. Xb.pvb
C. (patm – pvw)xb
D. Xb.patm
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The quantity of heat required to evaporate 1 kg of a saturated liquid is called __________________?
A. Specific heat
B. 1 kcal
C. Sensible heat
D. Latent heat
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1 torr is equal to ______________ mm Hg column?
A. 1
B. 0.1
C. 10
D. 1000
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Unrestrained expansion of an ideal gas does not result in its cooling due to the reason that the gas molecules ____________________?
A. Do not lose energy on collision
B. Are above the inversion temperature
C. Do not exert attractive force on each other
D. Do work equal to loss in kinetic energy
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Total energy at a point comprises of _____________ energy?
A. Potential & kinetic
B. Pressure
C. Internal
D. All a., b. & c.
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Which of the following is not a colligative property ?
A. Osmotic pressure
B. Depression of freezing point
C. Lowering of vapor pressure
D. None of these
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The temperature of a gas in a closed container is 27° C. If the temperature of the gas is increased to 300° C, then the pressure exerted is___________________?
A. Doubled
B. Halved
C. Trebled
D. Unpredictable
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Word of the Day
24 Jul
Untenable
(especially of a position or view) not able to be maintained or defended against attack or objection.
ناقابل مدافعت، غیر مستحکم، جو دلیل سے ثابت نہ ہو سکے

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