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"To err is human; to forgive,

divine."

- Alexander Pope

1. Maximum work that could be secured by expanding the gas over a given p

is the __________ work.

A. isothermal

B. adiabatic

C. isentropic

D. none of these

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2. Internal energy change of a system over one complete cycle in a cyclic pro

A. zero

B. +ve

C. -ve

D. dependent on the path

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3. Heating of water under atmospheric pressure is an __________ process.

A. isochoric B. isobaric

C. adiabatic D. isothermal

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4. Van Laar equation deals with the activity co-efficients in

A. binary solutions

B. ternary solutions

C. azeotropic mixture only

D. none of these


5. High __________ is an undesirable property for a good refrigerant.

A. specific heat

B. latent heat of vaporisation

C. viscosity

D. specific vapor volume

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"If you judge people, you have no

time to love them."

- Mother Teresa

6. Solubility of a substance which dissolves with an increase in volume and li

heat will be favoured by the

A. low pressure and high temperature.

B. low pressure and low temperature.

C. high pressure and low temperature.

D. high pressure and high temperature.


7. Entropy is a measure of the __________ of a system.

A. disorder

B. orderly behaviour

C. temperature changes only

D. none of these

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8. A chemical reaction will occur spontaneously at constant pressure and tem

the free energy is

A. zero



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B. positive

C. negative

D. none of these


9. Fundamental principle of refrigeration is based on the __________ law of

thermodynamics.

A. zeroth B. first

C. second D. third


10. For a spontaneous process, free energy

A. is zero

B. increases

C. decreases whereas the entropy increases

D. and entropy both decrease

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Section 11

"Hold a true friend with both

hands."

- (Proverb)

11. A refrigeration cycle is a reversed heat engine. Which of the following has

value of the co-efficient of performance (COP) for a given refrigeration eff

A. Vapor compression cycle using expansion valve.

B. Air refrigeration cycle.

C. Vapor compression cycle using expansion engine.

D. Carnot refrigeration cycle.


12. In a working refrigerator, the value of COP is always

A. 0

B. < 0

C. < 1

D. > 1

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13. __________ increases with increase in pressure.

A. The melting point of wax

B. The boiling point of a liquid



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C. both (a) and (b)

D. neither (a) nor (b)


14. A refrigerator may be termed as a

A. heat pump

B. heat engine

C. Carnot engine

D. none of these

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15. For a stable phase at constant pressure and temperature, the fugacity of e

component in a binary system __________ as its mole fraction increases.

A. decreases

B. increases

C. remains same

D. decreases linearly


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"Do not wait for leaders; do it

alone, person to person."

- Mother Teresa

16. Which of the following is not an intensive property ?

A. Chemical potential

B. Surface tension

C. Heat capacity

D. None of these


17. Out of the following refrigration cycles, which one has the minimum COP (

performance)?

A. Air cycle

B. Carnot cycle

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C. Ordinary vapour compression cycle

D. Vapour compression with a reversible expansion engine


18. Measurement of thermodynamic property of temperature is facilitated by _

law of thermodynamics.

A. 1st

B. zeroth

C. 3rd

D. none of these


19. The theoretical minimum work required to separate one mole of a liquid m

atm, containing 50 mole % each of n- heptane and n- octane into pure co

at 1 atm is

A. -2 RT ln 0.5

B. -RT ln 0.5

C. 0.5 RT

D. 2 RT


20. Keeping the pressure constant, to double the volume of a given mass of a

27°C, the temperature should be raised to __________ °C.

A. 270 B. 327

C. 300 D. 540


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Chemical Engineering Thermodynamics - Section 3 Chemical Engineering Thermodynamics - Section 4





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Section 11

"In the middle of difficulty lies

21. Entropy of an ideal gas depends upon its

A. pressure

B. temperature

C. both (a) & (b)

D. neither (a) nor (b)


22. Isobaric process means a constant process.

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opportunity."

- Albert Einstein A. temperature B. pressure

C. volume D. entropy


23. No work is done by the system, when a reaction occurs at constant

A. volume

B. temperature

C. pressure

D. none of these

View Answer

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24. If the vapour pressure at two temperatures of a solid phase in equilibrium

phase are known, then the latent heat of fusion can be calculated by the

A. Maxwell's equation

B. Clayperon-Claussius equation

C. Van Laar equation

D. Nernst Heat Theorem


25. The freezing point of a liquid decreases when the pressure is increased, if

__________ while freezing.

A. contracts

B. expands

C. does not change in volume

D. either (a), (b) or (c)


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Section 1 Section 2

Section 3

Section 4

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Section 6

Section 7

Section 8

Section 9

26. "At the absolute zero temperature, the entropy of every perfectly crystalli

becomes zero". This follows from the

A. third law of thermodynamics

B. second law of thermodynamics

C. Nernst heat theorem

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Section 10

Section 11

"Life is like riding a bicycle. To keep

your balance you must keep

moving."

- Albert Einstein

D. Maxwell's relations


27. During Joule-Thomson expansion of gases

A. enthalpy remains constant.

B. entropy remains constant.

C. temperature remains constant.

D. none of these.


28. The accentric factor of a materical, 'ω', is defined as ω = -log10(P r sat )T r -1 =

where, P r sat = reduced vapor pressure, T r = reduced temperature. The val

factor is always

A. > 2

B. < 1

C. > 1

D. < 3


29. Degress of freedom at triple point will be

A. 0 B. 1

C. 2 D. 3


30. "Law of corresponding states" says that

A., two different gases behave similarly, if their reduced properties

and T) are same.

B.the surface of separation (i. e. the meniscus) between liquid and v

phase disappears at the critical temperature.

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C.no gas can be liquified above the critical temperature, howsoever

pressure may be.

D.the molar heat of energy of gas at constant volume should be nea

(about 3 calories).


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abix.com/general-knowledge/questions-and-answers/http://www.indiabix.com/verbal-ability/questions-and-answers/http://www.indiabix.com/logical-reasoning/questions-and-answers/http://www.indiabix.com/aptitude/questions-and-answers/http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092006http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092006http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092006http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092006http://void%280%29/http://www.indiabix.com/about/privacy-policy.phphttp://www.indiabix.com/about/copyright.phphttp://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/097001http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/096001http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/095001http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/094001http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/093001http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092007http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092009http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092009http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092007http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092007http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092005http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092003http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092003http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/092005http://www.indiabix.com/chemical-engineering/chemical-engineering-thermodynamics/discussion-4759


14/44

Section 1

Section 2

Section 3

Section 4

Section 5

Section 6 Section 7

Section 8

Section 9

Section 10

Section 11

"Life is like riding a bicycle. To keep

your balance you must keep

moving."

- Albert Einstein

becomes zero". This follows from the

A. third law of thermodynamics

B. second law of thermodynamics

C. Nernst heat theorem

D. Maxwell's relations


27. During Joule-Thomson expansion of gases

A. enthalpy remains constant.

B. entropy remains constant.

C. temperature remains constant.

D. none of these.


28. The accentric factor of a materical, 'ω', is defined as ω = -log10(P r sat )T r -1 =

where, P r sat = reduced vapor pressure, T r = reduced temperature. The val

factor is always

A. > 2

B. < 1

C. > 1

D. < 3


29.Degress of freedom at triple point will be

A. 0 B. 1

C. 2 D. 3


30. "Law of corresponding states" says that

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