chemical engineering thermodynamics for chemical chemical engineering MCQs – Page 18

Practise multiple-choice questions from chemical engineering thermodynamics for chemical chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering thermodynamics for chemical chemical engineering Mcqs

341. Free energy change of mixing two liquid substances is a function of the__________________?
0

A. Quantities of the constituents only

B. Concentration of the constituents only

C. Temperature only

D. All A, B. and C

342. Number of phases in a colloidal system is_____________________?
0

A. 3

B. 2

C. 1

D. 4

343. Minimum number of phases that exists in a system is 1. Number of chemical species in a colloidal system is__________________?
0

A. 1

B. 2

C. 4

D. 3

344. In any spontaneous process, ?
0

A. Only F decreases

B. Only A decreases

C. Both F and A decreases

D. Both F and A increase

345. Specific volume of an ideal gas is____________________?
0

A. None of these

B. The reciprocal of its density

C. Proportional to pressure

D. Equal to its density

346. The expression for entropy change, ?S = n Cp . ln (T2/T1), is valid for the ______________ of a substance?
0

A. Simultaneous pressure & temperature change

B. Heating

C. Cooling

D. Both B. and C

347. dW and dq are not the exact differential, because q and W are__________________?
0

A. Intensive properties

B. Extensive properties

C. State functions

D. Path functions

348. Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates__________________?
0

A. Easier plotting

B. Use of only one graph for all gases

C. Covering of wide range

D. More accurate plotting

349. Compound having large heat of formation is_____________________?
0

A. Not at all stable (like nascent O2)

B. More stable

C. Less stable

D. Either more or less stable; depends on the compound

350. For a multi-component system, the term chemical potential is equivalent to the ___________________?
0

A. Molal concentration difference

B. Partial molar free energy

C. Molar free energy change

D. Molar free energy

351. Maximum work that could be secured by expanding the gas over a given pressure range is the _____________ work?
0

A. Adiabatic

B. Isentropic

C. Isothermal

D. None of these

352. The heat capacities for the ideal gas state depend upon the_________________?
0

A. Pressure

B. Temperature

C. Both A. & B.

D. Neither A. nor B.

353. Mollier chart is a _____________ plot?
0

A. Enthalpy vs. entropy

B. Pressure vs. enthalpy

C. Pressure vs. volume

D. Temperature vs. entropy

354. The expression, nRT ln(P1/P2), is for the _____________of an ideal gas?
0

A. Work done under adiabatic condition

B. Co-efficient of thermal expansion

C. Compressibility

D. Work done under isothermal condition

355. An ideal gas is taken around the cycle ABCA as shown in P-V diagram below: The work done by the gas during the cycle is equal to_________________?
0

A. 6 P1 V1

B. 3 P1V1

C. 12 P1V1

D. P1 V1

356. A/an ____________ system is exemplified by a vessel containing a volatile liquid in contact with its vapor?
0

A. Closed

B. Open

C. Isolated

D. None of these

357. For any system, what is the minimum number of degrees of freedom ?
0

A. 2

B. 1

C. 3

D. 0

358. The partial pressure of each constituent present in an alloy is _____________ the total vapor pressure exerted by the alloy?
0

A. Equal to

B. Either B. or C; depends on the type of alloy

C. More than

D. Less than

359. Fundamental principle of refrigeration is based on the ______________ law of thermodynamics?
0

A. Third

B. Zeroth

C. Second

D. First

360. Which of the following liquid metals has the highest thermal conductivity ?
0

A. Molten sodium

B. Molten lead

C. Molten potassium

D. Mercury

Previous Next

Showing 341 to 360 of 527 mcqs