696

D:-67.53%

Correct Answer:- OptionA
Question24:-A vertical cylinder with a freely flowing piston contains 0.1 kg air at 1.45 bar and a small electric resister: The resister is wired to an external 15 volt battery. When a
current of 2 Amps is passed through a resister for 60 sec, the piston sweeps a volume of Q,Q'2y73 - Find rise in temperature of air.
Assume : (1) piston and cylinder are insulated

(2) Air behaves as an ideal gas with C’,, 70014090)

۸۴

8:۴

۴ی

5:۴

Correct Answer:- OptionA

Question25-1 95 joules of heat are transformed from a reservoir at 402°C to an engine that operates on the camot cycle. The engine rejected heat to a reservoir at 24°C. Determine
the work done by engine,

५05 «1057
8-0.3 x 1957
೦0.6 1957
0:-0.5 x 1987
Correct Answer:-Question Cancelled

ರ high temperature and pressure Ng obeys the equation of state ۶۲۷ - b) = RT. Calculate the fugacity of Ng at 727°C and 500 atm. If b = 166.28 ml/mol
Data given : exp (0.101325) = 1.106

exp (1.01325) = 2.754

exp (0.350) = 1.419

exp (3.50) 3.115

4-553 atm
B:-1377 atm

00.5 atm

:-26557.5 atm
Correct Answer:- Option-B
‘Question27:-At 300 K and total pressure of 51.4 kPa the composition of the system containing two components 1 & 2 at equilibrium is “23 = 0.4 and Ya = 0.4. The saturation

temperature at the given temperature for pure components are P, = 25.7 kPa and Py = 10.28 kPa, Calculate the value of GE /RT for the liquid phase.
Data given : In (3) = 1.098; In (3.33) = 1.202; n(3.67) = 1.3;1n (4) = 1.386

40.515

86

Correct Answer:-Question Cancelled

‘Question28 -The enthalpy change of mixing for a binary liquid solution at 298 K and 1 bar is given by the equation AH = %)9(60 + 40), where AH is in Jmol and © and “gare
the mol fractions of components 1 and 2 respectively. The enthallpies of the pure liquids at the same temperature and pressure are 200 and 300 j/mol respectively. Determine

rumerical values of the partial molar enthalpies at infinite dilution i” and 113 at 298 K and 1 bar.
‘A=420 J/mol and 640 J/mol
B:-240 J/mol and 360 Jmol

C440 J/mol and 620 J/mol

260 Jmol and 340 mol

Correct Answer:- Option-B

Question29-The water gas shift reaction, ८०9) + प 209) + © © ‏(و)و‎ + H'9(9)is cared out at 1100 k and 1 bar. The reactants consist of 1 mol of 77. 1.5 mol of CO, 1 mol of
൧൭. Calculate the fraction of steam reacted in this case if the pressure is increased to 10 bar. Assume the mixture behaves as an ideal gas.
‘of the given reaction at 1100 K, Ink = 0

D:-0.70

Correct Answer:- OptionA

Question30:-A system is prepared by partially decomposing ௦௨00 into an evacuated space. Determine the number of degrees of freedom for the above mentioned case.

None of the above
Correct Answer:- Option-B

(१८९७०१३1 -4 reducing water pipe section has an inlet diameter of 50 mm and exit diameter of 30 mm. If the steady inlet speed is 2.5 m/s, then the exit speed in m/s.

५25