92. According to first law of thermodynamics
A.Work done by a system is equal to heat transferred by the system
B.Total internal energy of a system during a process remains constant
C.Internal energy, enthalpy and entropy during a process remain constant
D.Total energy of a system remains constant

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93. In an isothermal process, the internal energy
A.Increases
B.Decreases
C.Remains constant
D.First increases and then decreases

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94. Change in enthalpy in a closed system is equal to heat transferred if the reversible process takes place at constant
A.Pressure
B.Temperature
C.Volume
D.Internal energy

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95. Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant
A.Pressure
B.Temperature
C.Volume
D.Internal energy

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96. Total heat of a substance is also known as
A.Internal energy
B.Entropy
C.Thermal capacity
D.Enthalpy

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97. First law of thermodynamics
A.Enables to determine change in internal energy of the system
B.Does not help to predict whether the system will or not undergo a change
C.Provides relationship between heat, work and internal energy
D.All of the above

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98. According to first law of thermodynamics
A.Mass and energy are mutually convertible
B.Carnot engine is most efficient
C.Heat and work are mutually convertible
D.Mass and light are mutually convertible

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