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# Free preparation Medical and Engineering Entrance Exams | Thermo chemistry (Thermodynamics)

### India Study Solution Test Series (Chemistry Objective Questions)

NEET, JEE IIT, AIIMS, NTSE | Engineering, BDS, MBBS Admission Test
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Chemistry Practice Questions: Thermodynamics (Thermo-chemistry)
India Study Solution MCQ Test Series – Set 4 (Q. No 31-40)
Question 31: Which of the following is an endothermic reaction?
a. N
b. N
c. H
d. C

Question 32: An ideal gas is taken around the cycle ABCA as shown in P-V diagram. The net work done by the gas during the cycle is equal to:
a. 12P1V1
b. 6P
c. 5P
d. P

Question 33: Which of the following is correct option for free expansion of an ideal gas under adiabatic condition?
a. q = 0, ∆T < 0, w ≠ 0
b. q = 0, ∆T ≠ 0, w = 0
c. q ≠ 0, ∆T = 0, w = 0
d. q = 0, ∆T = 0, w = 0

Question 34: The energy associated with a system by virtue of its position is
a. Gibbs Energy
b. Internal Energy
c. Kinetic Energy
d. Potential Energy

Question 35: For isothermal expansion in case of an ideal gas:
a. ∆G = ∆S
b. ∆G = ∆H
c. ∆G = -T.∆S
d. None of these

Question 36: One mole of an ideal gas at 300 K is expanded isothermally from an initial volume of 1 litre to 10 litres. The ∆E for this process is (R = 2 cal. mol
a. 1381.1 cal
b. Zero
c. 163. 7 cal
d. 9 L atm

Question 37: The difference between ∆H and ∆E on a molar basis for the combustion of Methane gas at T K (kelvin) would be:
a. Zero
b. - RT
c. -2RT
d. -3RT

Question 38: Which reaction, with the following values of ∆H, ∆S, at 400 K is spontaneous and endothermic?
a. ∆H = -48 kJ; ∆S = + 135 J/K
b. ∆H = -48 kJ; ∆S = -135 J/K
c. ∆H = + 48 kJ; ∆S = +135 J/K
d. ∆H = +48 kJ; ∆S = -135 J/K

Question 39: When a certain amount of ethylene was combusted, 6226 kJ heat was evolved. If heat of combustion of ethylene is 1411 kJ/mole, the volume of O
a. 296.5 ml
b. 296.5 litres
c. 6226 x 22.4 litres
d. 22.4 litres

Question 40: For the reaction
C3H8 (g) + 5O2 (g) → 3CO2 (g) + 4H2O (l)
at constant temperature, ∆H – ∆E is
a. + RT
b. -3RT
c. +3RT
d. -RT
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India Study Solution MCQ Test Series - Hints and Solutions
tHERMODYNAMICS (THERMO-CHEMISTRY)
Set 4 (Q. No.31–40) Answers