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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NEET 2023 - Target Batch - Aryan Raj Singh
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NEET 2023 - Target Batch - Aryan Raj Singh

A monoatomic gas of n-moles is heated from temperature T1 to T2 under two different conditions (i) at constant volume and (ii) at constant pressure. The change in internal energy of the gas is 

(1) More for (i)

(2) More for (ii)

(3) Same in both cases

(4) Independent of number of moles

Subtopic:  First Law of Thermodynamics |
 57%
From NCERT
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Can two isothermal curves cut each other

(1) Never

(2) Yes

(3) They will cut when temperature is 0°C

(4) Yes, when the pressure is critical pressure

Subtopic:  Types of Processes |
 72%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

A vessel containing 5 litres of a gas at 0.8 m pressure is connected to an evacuated vessel of volume 3 litres. The resultant pressure inside will be (assuming whole system to be isolated) 

(1) 4/3 m

(2) 0.5 m

(3) 2.0 m

(4) 3/4 m

Subtopic:  Types of Processes |
 51%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh

For an isothermal expansion of a perfect gas, the value of ΔPP is equal -

(1) γ1/2ΔVV

(2) ΔVV

(3) γΔVV

(4) γ2ΔVV

Subtopic:  Types of Processes |
 65%
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If a gas is heated at constant pressure, its isothermal compressibility 

(1) Remains constant

(2) Increases linearly with temperature

(3) Decreases linearly with temperature

(4) Decreases inversely with temperature

Subtopic:  Types of Processes |
 56%
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In isothermal expansion, the pressure is determined by:

1. Temperature only
2. Compressibility only
3. Both temperature and compressibility
4. None of these


 

Subtopic:  Types of Processes |
 59%
From NCERT
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The isothermal bulk modulus of a perfect gas at normal pressure is -

(1) 1.013×105N/m2

(2) 1.013×106N/m2

(3) 1.013×1011N/m2

(4) 1.013×1011N/m2

Subtopic:  Types of Processes |
 76%
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In an isothermal change, an ideal gas obeys:
1. Boyle's law
2. Charles law
3. Gay-Lussac law
4. None of the above

Subtopic:  Basic Terms |
 87%
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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