1
BITSAT 2022
+3
-1

How will raise in temperature affects the viscosity of liquids and gases?

A
Both increases
B
Both decreases
C
In case of liquids, decreases and in case of gases, increases.
D
In case of liquid, increases and in case of gases, decreases.
2
BITSAT 2022
+3
-1

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.

A
For the gas A, a = 0 and its dependence on p is linear at all pressure.
B
For the gas B, b = 0 and its dependence on p is linear at all pressure.
C
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.
D
At high pressure the slope is positive for all real gases.
3
BITSAT 2021
+3
-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

A
$${2 \over 3}$$
B
$${1 \over 3} \times {{273} \over {298}}$$
C
$${1 \over 3}$$
D
$${1 \over 2}$$
4
BITSAT 2020
+3
-1

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

I. Larger the Tc/pc value of a gas, larger would be the included volume.

II. Critical temperature (Tc) of a gas is greater than its Boyle temperature (TB).

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.

A
Both I and II
B
Both I and III
C
Both II and III
D
I, II and III
EXAM MAP
Medical
NEET