Refer to the given figure. Let ΔU1 and ΔU2 be the changes in internal energy of the system in processes A and B. Then:
      

1. ΔU1 > ΔU2 2. ΔU1 = ΔU2 
3. ΔU1 < ΔU2 4. ΔU ≠ ΔU2

Subtopic:  Basic Terms |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Consider the process on a system shown in the figure. During the process, the work done by the system:
           

1. continuously increases
2. continuously decreases
3. first increases then decreases
4. first decreases then increases


 

Subtopic:  Work Done by a Gas |
 56%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Consider the following two statements.

(A): If heat is added to a system, its temperature must increase.
(B): If positive work is done by a system in a thermodynamic process, its volume must increase.
  
1. Both A and B are correct.
2. A is correct but B is wrong.
3. B is correct but A is wrong.
4. Both A and B are wrong.
Subtopic:  Work Done by a Gas |
 54%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

An ideal gas goes from the state \(i\) to the state \(f\) as shown in figure given below. The work done by the gas during the process,

   
 

1. is positive
2. is negative
3. is zero
4. cannot be obtained from this information
Subtopic:  Work Done by a Gas |
 64%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Consider two processes on a system as shown in figure (26-Q4).The volumes in the initial states are the same in the two processes and the volumes in the final states are also the same. Let ΔW1 and ΔW2 be the work done by the system in the processes A and B respectively.

1.  ΔW1 > ΔW2

2.  ΔW1 = ΔW

3.  ΔW1 < ΔW2

4.  Nothing can be said about the relation between ΔW1 and ΔW

Subtopic:  Work Done by a Gas |
 55%
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A gas is contained in a metallic cylinder fitted with a piston. The piston is suddenly moved in to compress the gas and is maintained at this position. As time passes the pressure of the gas in the cylinder

1.  increases

2.  decreases

3.  remains constant

4.  increases or decreases depending on the nature of the gas

Subtopic:  Types of Processes |
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

The pressure \(p\) and volume \(V\) of an ideal gas both increase in a process.

(a) such a process is not possible.
(b) the work done by the system is positive.
(c) the temperature of the system must increase.
(d) heat supplied to the gas is equal to the change in internal energy.

Choose the correct option:

1. (a), (b)  2. (b), (c) 
3. (c), (d)  4. (a), (d) 
Subtopic:  Work Done by a Gas |
 63%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

In a process on a system, the initial pressure and volume are equal to the final pressure and volume.

(a) The initial temperature must be equal to the final temperature.

(b) The initial internal energy must be equal to the final internal energy.

(c) The net heat given to the system in the process must be zero.

(d) The net work done by the system in the process must be zero

Choose the correct option 

1.  (a) , (b) 

2. (b) , (c) 

3. (c) , (d) 

4. (a) , (d) 

Subtopic:  Types of Processes |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

A system can be taken from the initial state p1, V1 to the final state p2 , V2 by two different methods. Let ΔQ and ΔW represent the heat given to the system and the work done by the system. Which of the following must be the same in both the methods ?

1.  ΔQ

2.  ΔW

3.  ΔQ + ΔW

4.  ΔQ – ΔW

Choose the correct option 

1.  (a) , (b) 

2. (b) , (c) 

3.  (d) only

4. (a) , (d) 

Subtopic:  First Law of Thermodynamics |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch

Refer to figure given below. Let \(ΔU_1\) and \(ΔU_2\) be the change in internal energy in processes \(A\) and \(B\) respectively, \(ΔQ\) be the net heat given to the system in process \(A + B\) and \(ΔW\) be the net work done by the system in the process \( A + B.\)

     

For the above figure:

(a) \(\Delta U_1+\Delta U_2=0\)
(b) \(\Delta U_1-\Delta U_2=0\)
(c) \(\Delta Q-\Delta W=0\)
(d) \(\Delta Q+\Delta W=0\)


Choose the correct option:
1. (a), (b) 
2. (b), (c) 
3. (c), (d) 
4. (a), (c) 

Subtopic:  Cyclic Process |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch