When a gas in a vessel expands, its internal energy decreases. The process involved is
Reversible
Irreversible
Isothermal
Adiabatic
- Consider the process A & B shown in the figure given below: In this case, it is possible that
- Air-refrigeration cycle
- When pressure is applied on the system, ice ↔ water, then
- Which of the following is not a common refrigerant?
- With increase in temperature, the atomic heat capacities of all solid elements
- When a system is in equilibrium for all possible processes, the differential or finite change of entropy…
- Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates
- When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the…
- Third law of thermodynamics is helpful in
- At __________ point, all the three phases (i.e. solid, liquid and gas) co-exist.
- What is the ratio of adiabatic compressibility to isothermal compressibility?
- The partial pressure of each constituent present in an alloy is __________ the total vapor pressure…
- The second law of thermodynamics states that
- Specific/molar Gibbs free energy for a pure substance does not change during
- Which of the following is true for Virial equation of state?
- Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is - 57°C…
- 1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated…
- Change of state namely evaporation condensation, freezing and melting is an __________ process.
- dW and dq are not the exact differential, because q and W are
- The expression, ΔG = nRT. ln(P2/P1), gives the free energy change
- Entropy of a substance remains constant during a/an __________ change.
- For a constant pressure reversible process, the enthalpy change (ΔH) of the system is
- COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about
- Heat of reaction at constant volume is identified with __________ change.
- Pick out the wrong statement.
- For a thermodynamic system containing 'x' chemical species, the maximum number of phases that can co-exist…
- The ammonia synthesis reaction represented by N2 + 3H2 2NH3; ΔH = - 22.4 kcal, is
- A solid is transformed into vapour without going to the liquid phase at
- The value of Cp & Cv respectively for monatomic gases in Kcal/kg Mole.°K are
- Work done may be calculated by the expression ∫ p dA for __________ processes.