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You Are On Multi Choice Question Bank SET 338

16901. Throttling process is a/an __________ process.

16902. The main feature of Carnot refrigeration cycle is that, it

16903. Heat of reaction at constant volume is identified with __________ change.

16904. Charles' law for gases states that

16905. If heat contents of CH4, C2H4 and C3H8 are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH4(g) + C2H4(g) C3H8(g) will be __________ Kcal.

16906. Helmholtz free energy (A) is defined as

16907. As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches

16908. For any system, what is the minimum number of degrees of freedom?

16909. At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is

16910. The variation of heat of reaction with temperature at constant pressure is given by the __________ law.

16911. At absolute zero temperature, the __________ of the gas is zero.

16912. Which of the following equations is used for the prediction of activity co-efficient from experiments ?

16913. The equation, , applicable to a binary solution of components. A and B in equilibrium with their vapors at constant temperature and pressure is called the __________ equation.

16914. Entropy of a substance remains constant during a/an __________ change.

16915. Gases are cooled in Joule-Thomson expansion, when it is __________ inversion temperature.

16916. PVy = constant, holds good for an isentropic process, which is

16917. GATT കരാർ ഒപ്പ് വച്ച വർഷം? [Gatt karaar oppu vaccha varsham?]

16918. The Government of the English East India Company came to an end in?

16919. What is the real name of Pele?

16920. Which of the following behaves most closely like an ideal gas ?

16921. In the reaction, C + O2 CO2 ; ΔH = - 94 kcal. What is the heat content (enthalpy)of O2?

16922. For a constant volume process __________ by the system is used only to increase the internal energy.

16923. When a system is in equilibrium for all possible processes, the differential or finite change of entropy is

16924. A system is said to be at equilibrium, if the entropy of the system has reached __________ value.

16925. In the equation, PVn = constant, if the value of n = ± ∞, then it represents a reversible __________ process.

16926. Degree of freedom of the system ice-water-vapour will be

16927. A system in which there is exchange of energy but not of mass, is called a/an __________ system.

16928. The point at which all the three (solid, liquid and gas) phases co-exist, is known as the __________ point.

16929. In an ideal gas mixture, fugacity of a species is equal to its

16930. X-rays exhibit high penetrating power they are called?

16931. The third law of thermodynamics states that the

16932. Consider the reaction, C + O2 CO2 ;ΔH = - 94 kcal. What will be the value of ΔH for the reaction CO2 C + O2 ?

16933. Which is a state function ?

16934. For an ideal liquid solution, which of the following is unity ?

16935. In the decomposition of PCl5 represented by, PCl5 PCl3 + Cl2, decrease in the pressure of the system will __________ the degree of dissociation of PCl5.

16936. To obtain integrated form of Clausius-Clayperon equation, , from the exact Clayperon equafion, it is assumed that the

16937. In case of an __________ process, the temperature of the system increases.

16938. The standard state of a gas (at a given temperature) is the state in which fugacity is equal to

16939. Cp of a gas at its critical temperature and pressure

16940. Trouton's ratio is given by (where λb, = molal heat of vaporisation of a substance at its normal boiling point, kcal/kmol Tb = normal boiling point, °K )

16941. Which of the following is true for Virial equation of state ?

16942. Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole . °K

16943. A gas can be liquified by pressure alone only, when its temperature is __________ its critical temperature.

16944. Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the

16945. For an ideal gas, the internal energy depends upon its __________ only.

16946. Compound having large heat of formation is

16947. Second law of thermodynamics is concerned with the

16948. Maximum work that could be secured by expanding the gas over a given pressure range is the __________ work.

16949. Internal energy change of a system over one complete cycle in a cyclic process is

16950. Heating of water under atmospheric pressure is an __________ process.

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