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You Are On Multi Choice Question Bank SET 336

16801. Pick out the Claussius-Clayperon equation from the following:

16802. For organic compounds, group contribution method can be used for the estimation of

16803. Specific __________ does not change during phase change at constant temperature and pressure.

16804. When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

16805. Heat evolved/absorbed during conversion of a substance from one allotropic form to another is termed as the heat of

16806. What happens in a reversible adiabatic compression ?

16807. Sublimation temperature of dry ice (solid CO2) is __________ °C.

16808. If atmospheric temperature and dew point are nearly equal, then the relative humidity is

16809. The internal energy of an incompressible fluid depends upon its

16810. Entropy change in case of reversible adiabatic process is

16811. In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is

16812. For multicomponent multiple phases to be in equilibrium at the same pressure and temperature, the __________ of each component must be same in all phases.

16813. The efficiency of an Otto engine compared to that of a diesel engine, for the same compression ratio will be

16814. Mollier chart is a __________ plot.

16815. Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

16816. Pick out the undesirable property for a good refrigerant.

16817. Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a

16818. The fusion of a crystalline solid at its melting point to form a liquid at the same temperature is accompanied by

16819. Melting of ice is an example of an __________ process.

16820. A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

16821. Rotary lime kiln is an example of a/an __________ system.

16822. Heat of reaction is

16823. The expression, , is for the____of an ideal gas.

16824. What happens in a reversible adiabatic expansion process ?

16825. Degree of freedom of a system consisting of a gaseous mixture of H2 and NH3 will be

16826. On a P-V diagram of an ideal gas, suppose a reversible adiabatic line intersects a reversible isothermal line at point A. Then at a point A, the slope of the reversible adiabatic line (∂P/∂V)s and the slope of the reversible isothermal line (∂P/∂V)T are related as (where, y = Cp/Cv)

16827. Gibbs-Helmholtz equation is

16828. Sales minus cost of goods sold is

16829. Fugacity co-efficient of a substance is the ratio of its fugacity to

16830. Dryness fraction of wet steam is defined as the ratio of mass of vapour in the mixture to the mass of mixture __________ calorimeter is not used for measuring the dryness fraction of steam.

16831. As the time is passing, entropy of the universe

16832. Which of the following processes can not be made reversible even under ideal condition of operation?

16833. The relation connecting the fugacities of various components in a solution with one another and to composition at constant temperature and pressure is called the __________ equation.

16834. Which of the following identities can be most easily used to verify steam table data for superheated steam.

16835. In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________ process.

16836. The ammonia synthesis reaction represented by N2 + 3H2 2NH3 ; ΔH = - 22.4 kcal, is

16837. With increase in temperature, the atomic heat capacities of all solid elements

16838. The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.

16839. The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is

16840. Steam undergoes isentropic expansion in a turbine from 5000 kPa and 400°C (entropy = 6.65 kJ/kg K) to 150 kPa) (entropy of saturated liquid = 1.4336 kJ/kg . K, entropy of saturated vapour = 7.2234 kJ/kg. K) The exit condition of steam is

16841. An isentropic process is carried out at constant

16842. All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.

16843. High pressure steam is expanded adiabati-cally and reversibly through a well insulated turbine, which produces some shaft work. If the enthalpy change and entropy change across the turbine are represented by ΔH and ΔS respectively for this process:

16844. The necessary condition for phase equilibrium in a multiphase system of N components is that the

16845. Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates

16846. The liability of past member or of the estate of a deceased member for the debts of a Society shall continue for what period?

16847. The final authority of a Society shall be vested in

16848. Gibbs phase rule finds application, when heat transfer occurs by

16849. Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of

16850. Ideal gas law is applicable at

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