Student Login

Home›Chapters›Thermodynamics PYQs›Gas Laws & Ideal Gas Equation›Question 37

MHT CET 2024 (11 May, Shift 1) · Gas Laws & Ideal Gas Equation

Gas Laws & Ideal Gas Equation question from MHT CET 2024 (11 May, Shift 1)

Q37MHT CET 2024 · 11 MAY · SHIFT 1Medium

Gas Laws & Ideal Gas Equation

Two vessels separately contain two ideal gases A and B at the same temperature, pressure of A being twice that of B. Under such conditions, the density of A is found to be 1.5 times the density of $B$ . The ratio of molecular weights of $A$ and $B$ is

Show answer and solution

Answer: (c)

$\rho = \frac{PM}{RT} \Rightarrow M \propto \frac{\rho}{P}$ at the same $T$ .
$\frac{M_A}{M_B} = \frac{\rho_A}{\rho_B}\cdot\frac{P_B}{P_A} = 1.5 \times \frac{1}{2} = \frac{3}{4}$ .
So the answer is (c) $3 : 4$ .

Report a mistake

More questions on Gas Laws & Ideal Gas Equation

Two vessels A and B are of the same size and are at same temperature. A contains 1 g of…JEE Main 2024 (29 Jan, Shift 1)
At constant temperature, increasing the pressure of a gas by 5% its volume will decrease…MHT CET 2023 (14 May, Shift 2)
Which one of the following represents correctly the variation of volume (V) of an ideal…MHT CET 2023 (13 May, Shift 1)
According to Boyle's law, the product PV remains constant. The unit of PV is same as that…MHT CET 2023 (11 May, Shift 2)
A bicycle tyre is filled with air having pressure of 270 kPa at 27. The approximate…JEE Main 2023 (29 Jan, Shift 1)
For three low density gases A, B, C pressure versus temperature graphs are plotted while…JEE Main 2023 (1 Feb, Shift 2)
A sample of oxygen gas and a sample of hydrogen gas both have the same mass, same volume…MHT CET 2023 (13 May, Shift 2)
A container of volume 200 cm³ contains 0.2 mole of hydrogen gas and 0.3 mole of argon…NEET 2023