1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
A gas can be taken from A to B via two different paths ACB and ADB.

When path ACB is used, $60$ J of heat flows into the system and $30$ J of work is done by the system. If path ADB is used, work done by the system is $10$ J.
The heat flow into the system in path ADB is
A
$80$ J
B
$20$ J
C
$100$ J
D
$40$ J
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Which of the following is a correct statement for a thermodynamic system?
A
The internal energy changes in all processes
B
Internal energy and entropy are state functions
C
Work is a state function
D
The work done in an adiabatic process is always zero
3
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
4
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