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 2025
MCQ (Single Correct Answer)
+1
-0

Given below are two statements.

Statement-I : Adiabatic work done is positive when work is done on the system and internal energy of the system increases.

Statement - II : No work is done during free expansion of an ideal gas.

In the light of the above statements, choose the correct answer from the options given below.

A
Both statements - I and Statement - II are false
B
Statement - I is true but statement - II is false
C
Statement - I is false but statement - II is true
D
Both statements - I and Statement - II are true.

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