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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

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
Correct Answer: PvB
1 torr is equal to ______________ mm Hg column?
A 1
B 0.1
C 10
D 1000
Correct Answer: 1
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
Correct Answer: Latent heat
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
Correct Answer: Do not exert attractive force on each other
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
Correct Answer: None of these
Total energy at a point comprises of _____________ energy?
A Potential & kinetic
B Pressure
C Internal
D All A., B. & C.
Correct Answer: All A., B. & C.
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
Correct Answer: Unpredictable
A gas mixture contains 6 moles of H2 and 2 moles of N2. If the total pressure of the gaseous mixture is 4 kgf/cm2; then the partial pressure of N2 in the mixture will be _____________ kgf/cm2 ?
A 1
B 2
C 4
D 8
Correct Answer: 1
Hess’s law of constant heat summation is based on conservation of mass. It deals with ___________________?
A Equilibrium constant
B Reaction rate
C Changes in heat of reaction
D None of these
Correct Answer: Changes in heat of reaction
In a neutral solution _________________?
A H+ ions are absent
B OH- ions are absent
C Both H+ and OH- ions are present in very small but equal concentration
D None of these
Correct Answer: Both H+ and OH- ions are present in very small but equal concentration
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