1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
A: Entropy of a perfect crystalline solid at absolute zero approaches zero.
B: For spontaneity of a reaction, $T\Delta S > \Delta H$.
Among the two statements given above, identify the correct answer from the options given below.
A
Both '$A$' and '$B$' are true
B
'A' is true but 'B' is false
C
Both 'A' and 'B' are false
D
'$A$' is false but '$B$' is true
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
For the following gaseous reversible reaction:
$3\text{A}_{(g)} + \text{B}_{(g)} \rightleftharpoons \text{A}_3\text{B}_{(g)} \quad (\Delta_r H = -q\text{ kJ})$. The amount of product $\text{A}_3\text{B}_{(g)}$ is affected by ____
A
Temperature alone
B
Pressure alone
C
Both temperature and pressure
D
Temperature, pressure and catalyst
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
For the reversible reaction,
$\text{N}_{2(g)} + 3\text{H}_{2(g)} \rightleftharpoons 2\text{NH}_{3(g)}$
When the partial pressure is measured in atmosphere, the value of $K_p$ at $500^\circ\text{C}$ is $1.44 \times 10^{-5}$. The value of $K_c$ when the concentration is expressed in mol L$^{-1}$ is:
A
$\dfrac{1.44 \times 10^{-5}}{(0.082 \times 500)^{-2}}$
B
$\dfrac{1.44 \times 10^{-5}}{(8.314 \times 773)^{-2}}$
C
$\dfrac{1.44 \times 10^{-5}}{(0.082 \times 773)^{2}}$
D
$\dfrac{1.44 \times 10^{-5}}{(0.082 \times 773)^{-2}}$
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
A $0.15$ mole of pyridinium chloride has been added to $500\text{ cm}^3$ of $0.2$ M pyridine solution (a base). Assuming there is no change in volume upon mixing(Given: $pK_b$ of pyridine = 8.82), the pH of the resulting solution is
A
$5$
B
$6$
C
$7$
D
$8$