Activity co-efficient is a measure of the
Departure from ideal solution behaviour
Departure of gas phase from ideal gas law
Vapour pressure of liquid
None of these
- Degree of freedom of the system ice-watervapour will be
- If atmospheric temperature and dew point are nearly equal, then the relative humidity is
- No work is done by the system, when a reaction occurs at constant
- The gas law (PV = RT) is true for an __________ change.
- The equation, PV = nRT, is best obeyed by gases at
- Change of heat content when one mole of compound is burnt in oxygen at constant pressure is called the
- An irreversible process
- Sublimation temperature of dry ice (solid CO2) is __________ °C.
- Dry ice is
- Absorption/evolution of heat during conversion of a substance from one allotropic form to another is…
- Which of the following is Clausius-Clapeyron Equation for vaporisation of an ideal gas under the condition…
- Critical temperature is defined as the temperature above which a gas will
- The internal energy of an ideal gas does not change in a reversible __________ process.
- Isobaric process means a constant process.
- Which of the following will increase the volume of a real gas by four times?
- Which is not constant for an ideal gas?
- The fugacity of a gas in a mixture is equal to the product of its mole fraction and its fugacity in…
- Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of
- Adiabatic compression of a saturated water vapour makes it
- The expression, nCv(T2 - T1), is for the __________ of an ideal gas.
- Choose the condition that must be specified in order to liquify CO2 (triple point for CO2 is - 57°C…
- Which of the following non-flow reversible compression processes require maximum work?
- In a working refrigerator, the value of COP is always
- Compressibility factor of a gas is
- Pick out the wrong statement.
- One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one
- For a constant pressure reversible process, the enthalpy change (ΔH) of the system is
- The freezing point of a liquid decreases when the pressure is increased, if the liquid __________ while…
- The activity of an ideal gas is numerically __________ its pressure.
- At the absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero.…