physics_JEE_Advance_2019_S2 - Competishun – Live JEE & NEET Courses and Exam Prep

JEE Advance 2019

Paper-2

Multiple correct answers - Select all that apply

Question

A mixture of ideal gas containing 5 moles of monatomic gas and 1 mole of rigid diatomic gas is initially at pressure $\mathrm{P}_0$, volume $\mathrm{V}_0$ and temperature $\mathrm{T}_0$. If the gas mixture is adiabatically compressed to a volume $\mathrm{V}_0 / 4$, then the correct statement(s) is/are, (Give $2^{1.2}=2.3 ; 2^{3.2}=9.2 ; \mathrm{R}$ is gas constant)

Select ALL correct options:

The final pressure of the gas mixture after compression is in between $9 \mathrm{P}_0$ and $10 \mathrm{P}_0$

The average kinetic energy of the gas mixture after compression is in between $18 \mathrm{RT}_0$ and $19 \mathrm{RT}_0$

The work $|\mathrm{W}|$ done during the process is $13 \mathrm{RT}_0$

Adiabatic constant of the gas mixture is 1.6

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

⚠ Partially correct. Some answers are missing.

Solution