BITSAT 2022 | States of Matter Question 4 | Chemistry

The given graph represents the variation of compressibility factor (Z) = $$\frac{pV}{nRT}$$, for three real gases A, B and C. Identify the only incorrect statement.

BITSAT 2022 Chemistry - States of Matter Question 4 English

For the gas A, a = 0 and its dependence on p is linear at all pressure.

For the gas B, b = 0 and its dependence on p is linear at all pressure.

For the gas C, which is typical real gas for which neither a nor b = 0. By knowing the minima and point of the intersection with Z = 1, a and b can be calculated.

At high pressure the slope is positive for all real gases.

BITSAT 2021

MCQ (Single Correct Answer)

-1

Equal masses of methane and oxygen are mixed in an empty container at 25$$^\circ$$C. The fraction of the total pressure exerted by oxygen is

$${2 \over 3}$$

$${1 \over 3} \times {{273} \over {298}}$$

$${1 \over 3}$$

$${1 \over 2}$$

BITSAT 2020

MCQ (Single Correct Answer)

-1

Which of the following statements on critical constants of gases are correct?

I. Larger the T_c/p_c value of a gas, larger would be the included volume.

II. Critical temperature (T_c) of a gas is greater than its Boyle temperature (T_B).

III. At the critical point in the van der Waals' gas isotherm, $${\left( {{{\partial p} \over {\partial {V_m}}}} \right)_{{T_c}}} = 0$$

Select the correct answer using the codes given below.

Both I and II

Both I and III

Both II and III

I, II and III

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