Thermodynamics

An ideal gas is allowed to expand form 1 L to 10 L against a constant external pressure of I bar. The work done in kJ is :

During compression of a spring the work done is 10kJ and 2kJ escaped to the surroundings as heat. The change in internal energy, $$\Delta$$U(inkJ) is :

Which one of the following equations does not correctly represent the first law of thermodynamics for the given processes involving an ideal gas? (Assume non-expansion work is zero)

An ideal gas undergoes isothermal compression from 5m³ to 1 m³ against a constant external pressure of 4 Nm^–2. Heat released in this process is used to increase the temperature of 1 mole of Al. If molar heat capacity of Al is 24 J mol^–1 K^–1, the temperature of Al increases by :

Five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume. The work done is :

Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following :

The heat required to raise the temperature of body by 1 K is called :

An ideal gas undergoes isothermal expansion at constant pressure. During the process :

Among the following, the set of parameters that represents path function, is : (A) q + w (B) q (C) w (D) H–TS

For one mole of an ideal gas, which of these statements must be true? (a) U and H each depends only on temperature (b) Compressibility factor z is not equal to 1 (c) C_P, m – C_V, m = R (d) dU = C_VdT for any process