Which of the following is correct in terms of increasing work done for the same initial volume and final volume ?

(1) Adiabatic < Isothermal < Isobaric

(2) Isobaric < Adiabatic < Isothermal

(3) Adiabatic < Isobaric < Isothermal

(4) None of these

Concept Questions :-

Work done by gas
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A sample of gas expands from volume V1 to V2. The amount of work done by the gas is greatest when the expansion is 

(1) Isothermal

(2) Isobaric

(3) Adiabatic

(4) Equal in all cases

Concept Questions :-

Work done by gas
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A Container having 1 mole of a gas at a temperature 27°C has a movable piston which maintains  constant pressure in container of 1 atm. The gas is compressed until temperature becomes 127°C. The work done is (Cp for gas is 7.03 cal/mol K) 

(1) 703 J

(2) 814 J

(3) 121 J

(4) 2035 J

Concept Questions :-

Work done by gas
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In a reversible isochoric change -

1. ΔW = 0

2. ΔQ = 0

3. ΔT = 0

4. ΔU = 0

Concept Questions :-

Types of processes
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Entropy of a thermodynamic system does not change when this system is used for -

(1) Conduction of heat from a hot reservoir to a cold reservoir

(2) Conversion of heat into work isobarically

(3) Conversion of heat into internal energy isochorically

(4) Conversion of work into heat isochorically

Concept Questions :-

Types of processes
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Which is incorrect ?

(1) In an isobaric process, Δp = 0

(2) In an isochoric process, ΔW = 0

(3) In an isothermal process, ΔT = 0

(4) In an isothermal process, ΔQ = 0

Concept Questions :-

Types of processes
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A Carnot engine working between 300 K and 600K has work output of 800 J per cycle. What is amount of heat energy supplied to the engine from source per cycle ?

(1) 1800 J/cycle

(2) 1000 J/cycle

(3) 2000 J/cycle

(4) 1600 J/cycle

Concept Questions :-

Heat engine and refrigerator
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If the door of a refrigerator is kept open, then which of the following is true ?

1. Room is cooled

2. Room is heated

3. Room is either cooled or heated

4. Room is neither cooled nor heated

Concept Questions :-

Heat engine and refrigerator
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In a cyclic process, the internal energy of the gas -

(1) Increases

(2) Decreases

(3) Remains constant

(4) Becomes zero

Concept Questions :-

Cyclic process
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For a reversible process, necessary condition is -

(1) In the whole cycle of the system, the loss of any type of heat energy should be zero

(2) That the process should be too fast

(3) That the process should be slow so that the working substance should remain in thermal and mechanical equilibrium with the surroundings

(4) The loss of energy should be zero and it should be quasistatic

Concept Questions :-

Types of processes
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