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One mole of a diatomic ideal gas undergoes a cyclic process \(ABC\) as shown in figure. The process \(BC\) is adiabatic. The temperatures at \(A,B\) and \(C\) are \(400~\text{K},800~\text{K}\) and \(600~\text{K}\) respectively. Choose the correct statement:

       

1. The change in internal energy in the process \(CA\) is \(700~{R}\)
2. The change in internal energy in the process \(AB\) is \(-350~{R}\)
3. The change in internal energy in the process \(BC\) is \(-500~R\)
4. The change in internal energy in the whole cyclic process is \(250~R\)
Q1:
 66% From NCERT JEE
Subtopic:  Cyclic Process |
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An ideal gas goes through a reversible cycle \({a}\rightarrow{b}\rightarrow{c}\rightarrow{d}\) has the \({V \text- T}\) diagram as shown below. Process \({d}\rightarrow{a}\) and \({b}\rightarrow{c}\) are adiabatic. 
     
The corresponding \({P \text- V}\) diagram for the process is (all figures are schematic and not drawn to scale):
1. 3.
2. 4.

 
Q2:
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Subtopic:  Cyclic Process |
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A sample of an ideal gas is taken through the cyclic process \(ABCA\) as shown in the figure. It absorbs, \(40~\text{J}\) of heat during part \(AB\), no heat during \(BC\), and rejects \(60~\text{J}\) of heat during \(CA\). A work of \(50~\text{J}\) is done on the gas during part \(BC\). The internal energy of the gas at \(A\) is \(1560~\text{J}\). The work done by the gas during the part \(CA\) is:
       
1. \(20~\text{J}\)
2. \(30~\text{J}\)
3. \(-30~\text{J}\)
4. \(-60~\text{J}\)
Q3:
 62% From NCERT JEE
Subtopic:  Cyclic Process |
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Given a cyclic process shown in an indicator diagram using SI units. The work done by the gas during the process is:
1. \(300\) units 2. \(-300\) units
3. \(600\) units 4. \(-600\) units
Q4:
 67% From NCERT JEE
Subtopic:  Cyclic Process |
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