Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Advanced 2015Paper 1
Exam
JEE Advanced
Year
2015
Paper
Paper 1
Subject
Chemistry
Chapter
Thermodynamics (C)

JEE Advanced 2015 · Paper 1 · Chemistry · Thermodynamics (C)

Match the thermodynamic processes given under Column I with the...

Match the thermodynamic processes given under Column I with the expressions given under Column II.
Column I Column II
A. Freezing of water at 273 K and 1 atm P. q=0q = 0
B. Expansion of 1 mol of an ideal gas into a vacuum under isolated conditions Q. w=0w = 0
C. Mixing of equal volumes of two ideal gases at constant temperature and pressure in an isolated container R. ΔSsys<0\Delta{S}_{sys} < 0
D. Reversible heating of H2(g){H}_{2} ( g ) at 1 atm from 300 K to 600 K, followed by reversible cooling to 300 K at 1 atm S. \DeltaU=0\DeltaU = 0
T. \DeltaG=0\DeltaG = 0

Options

  1. Aa-r;b-s,t;c-r,s,t;d-s,t;
  2. Ba-q,r;b-q;c-q;d-s,t;
  3. Ca-r,t;b-p,q,s;c-p,q,s;d-p,q,s,t;
  4. Da-q,r,s;b-s,t;c-q,r,s;d-t;

Correct answer

C. a-r,t;b-p,q,s;c-p,q,s;d-p,q,s,t;

Step-by-step solution

A - H2O(l)→H2O(s){H}_{2}O ( l ) \to {H}_{2}O ( s ) at 273 K. & 1 atm
∆H=−ve=q∆ H = - ve = q
∆Ssys<0,∆G=0∆ {S}_{sys} < 0, ∆ G = 0
w≠0w \ne 0 (as water expands on freezing), ∆U≠0∆ U \ne 0
B - Free expansion of ideal gas.
q = 0
w = 0
∆U=0∆ U = 0
∆Ssys>0∆ {S}_{sys} > 0
∆G<0∆ G < 0
C - Mixing of equal volume of ideal gases at constant pressure & temp in an isolated container
q = 0, w = 0, ∆U=0∆ U = 0 , ∆Ssys>0∆ {S}_{sys} > 0 , ∆G<0∆ G < 0
D - H2(g)300KReversible⟶Heating,1atm\begin{array}{ll}{H}_{2}\left(g\right)300K & Reversible \\ ⟶ \\ Heating, 1atm\end{array}600K Reversible⟶Cooling,1atm\begin{array}{ll}Reversible \\ ⟶ \\ Cooling, 1atm\end{array} 300K<br/><br />q = 0, w = 0, ∆ U = 0,,∆ G = 0,,∆ {S}_{sys} = 0$
Practice Thermodynamics (C) on Quantrex Academy →

More from Thermodynamics (C)

An ideal gas ( 0.5 mol), initially at 2 bar pressure, is compressed at a constant… JEE Advanced 2026List-I contains various physical/chemical processes, and List-II contains combinations of… JEE Advanced 2026Consider the reaction 2H_2S(g) + 3O_2(g) arrow 2H_2O(l) + 2SO_2(g) The magnitude of… JEE Main 2026Match List - I with List - II. Given V_1 and V_2 are initial and final volumes… JEE Main 2026Arrange the following isothermal processes in order of the magnitude of the work ( p - V… JEE Main 2026Consider the reaction X leftharpoons Y at 300 K. If Δ H^ θ and K are 28.40 kJ mol ^ -1… JEE Main 2026Consider the following data for the reaction X_2(g) + Y_2(g) leftharpoons 2XY(g) at 600 K… JEE Main 2026The correct order of molar heat capacities measured at 298 K and 1 bar is : JEE Main 2026 Full Thermodynamics (C) list All JEE Advanced PYQs