1
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

What is [NH$$_{4}^+$$] in a solution that is 0.02 M NH3 0.01 M KOH ? [Kb(NH3) = 1.8 $$\times$$ 10$$-$$5]

A
3.6 $$\times$$ 10$$-$$5 M
B
1.8 $$\times$$ 10$$-$$5 M
C
0.9 $$\times$$ 10$$-$$5 M
D
7.2 $$\times$$ 10$$-$$5 M
2
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

For an isomerisation reaction A $$\rightleftharpoons$$ B, the temperature dependence of equilibrium constant is given by

loge K = 4.0 $$-$$ $$\frac{2000}{T}$$

The value of $$\Delta$$S$$^\circ$$ at Hook is, therefore

A
4R
B
5R
C
400R
D
2000R
3
BITSAT 2022
MCQ (Single Correct Answer)
+3
-1

In an adiabatic process, no transfer of heat takes place between system and surrounding. Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following.

A
q = 0, $$\Delta$$T $$\ne$$ 0, W = 0
B
q $$\ne$$ 0, $$\Delta$$T = 0, W = 0
C
q = 0, $$\Delta$$T = 0, W = 0
D
q = 0, $$\Delta$$T < 0, W $$\ne$$ 0
4
BITSAT 2022
MCQ (Single Correct Answer)
+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.

BITSAT 2022 Chemistry - States of Matter Question 4 English

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.
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