If 32 gm of \(O_2\) at \(27^{\circ}\mathrm{C}\) is mixed with 64 gm of \(O_2\) at \(327^{\circ}\mathrm{C}\) in an adiabatic vessel, then the final temperature of the mixture will be:
1. \(200^{\circ}\mathrm{C}\)
2. \(227^{\circ}\mathrm{C}\)
3. \(314.5^{\circ}\mathrm{C}\)
4. \(235.5^{\circ}\mathrm{C}\)

Subtopic:  Molar Specific Heat |
 68%
From NCERT
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One mole of an ideal diatomic gas undergoes a transition from A to B along a path AB as shown in the figure.

The change in internal energy of the gas during the transition is

(1) 20 kJ

(2) -20 kJ

(3) 20 J

(4) -12 kJ

Subtopic:  Molar Specific Heat |
 68%
From NCERT
NEET - 2015
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During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of CP/CV for the gas is equal to:

1. 4/3 2. 2
3. 5/3 4. 3/2
Subtopic:  Types of Processes | Molar Specific Heat |
 64%
From NCERT
NEET - 2013
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If the ratio of specific heat of a gas at constant pressure to that at constant volume is γ, the change in internal energy of a mass of gas, when the volume changes from V to 2V constant pressure p, is 

(1) R/(γ1)

(2) pV

(3) pV/(γ1)

(4) γpV/(γ1)

Subtopic:  First Law of Thermodynamics | Molar Specific Heat |
 67%
From NCERT
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Under isothermal conditions, the volumes of ideal gas A and actual gas B grow from V to 2 V. The increase in internal energy:

1. will be the same in both A and B.
2. will be zero in both the gases.
3. of B will be more than that of A.
4. of A will be more than that of B.



 

Subtopic:  Molar Specific Heat |
From NCERT
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The specific heat of a gas in an isothermal process is: 
1. Infinite
2. Zero
3. Negative
4. Remains constant

Subtopic:  Molar Specific Heat |
 69%
From NCERT
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A monoatomic gas is supplied with the heat \(Q\) very slowly, keeping the pressure constant. The work done by the gas will be: 
1. \({2 \over 3}Q\)
2. \({3 \over 5}Q\)
3. \({2 \over 5}Q\)
4. \({1 \over 5}Q\)

Subtopic:  Molar Specific Heat |
 61%
From NCERT
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The molar heat capacity in case of a diatomic gas if it does a work of Q4 when heat Q is supplied to it is:

1. 25R

2. 52R

3. 103R

4. 67R

Subtopic:  Molar Specific Heat |
From NCERT
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When an ideal monoatomic gas is heated at constant pressure, fraction of heat energy supplied which increases the internal energy of gas, is 

(1) 25

(2) 35

(3) 37

(4) 34

Subtopic:  Molar Specific Heat |
 77%
From NCERT
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When an ideal gas (γ = 5/3) is heated under constant pressure, then what percentage of given heat energy will be utilised in doing external work ?

1. 40 %

2. 30 %

3. 60 %

4. 20 %

Subtopic:  Molar Specific Heat |
 67%
From NCERT
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