30301. As the time is passing, entropy of the universe
30302. Which of the following processes can not be made reversible even under ideal condition of operation?
30303. 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.
30304. Which of the following identities can be most easily used to verify steam table data for superheated steam.
30305. In the equation PVn = constant, if the value of n = y = Cp/Cv, then it represents a reversible __________ process.
30306. The ammonia synthesis reaction represented by N2 + 3H2 2NH3 ; ΔH = - 22.4 kcal, is
30307. With increase in temperature, the atomic heat capacities of all solid elements
30308. The temperature at the eutectic point of the system is the __________ temperature that can be attained in the system.
30309. The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is
30310. 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
30311. An isentropic process is carried out at constant
30312. All gases except __________ shows a cooling effect during throttling process at atmospheric temperature and pressure.
30313. 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:
30314. The necessary condition for phase equilibrium in a multiphase system of N components is that the
30315. Compressibility factor-reduced pressure plot on reduced co-ordinates facilitates
30316. The liability of past member or of the estate of a deceased member for the debts of a Society shall continue for what period?
30317. The final authority of a Society shall be vested in
30318. Gibbs phase rule finds application, when heat transfer occurs by
30319. Absorption/evolution of heat during conversion of a substance from one allotropic form to another is termed as the heat of
30320. Ideal gas law is applicable at
30321. Reduced pressure of a gas is the ratio of its
30322. For a reversible process involving only pressure-volume work
30323. Air enters an adiabatic compressor at 300K. The exit temperature for a compression ratio of 3, assuming air to be an ideal gas (Y = Cp/Cv = 7/5) and the process to be reversible, is
30324. Entropy change for an irreversible process taking system and surrounding together is
30325. In a homogeneous solution, the fugacity of a component depends upon the
30326. For an incompressible fluid, the __________ is a function of both pressure as well as temperature.
30327. An ideal monoatomic gas is taken round the cycle ABCDA as shown below in the P-V diagram The work done during the cycle is
30328. One ton of refrigeration capacity is equivalent to the heat removal rate of
30329. What is the degree of freedom for a system comprising liquid water equilibrium with its vapour ?
30330. Equilibrium constant of a reaction varies with the
30331. Third law of thermodynamics is concerned with the
30332. Claude's liquefaction process employs the cooling of gases by
30333. Gibbs free energy (F) is defined as
30334. The expression for entropy change given by, ΔS = nR ln (V2/V1) + nCv ln (T2/T1) is valid for
30335. The second law of thermodynamics states that
30336. Internal energy of an ideal gas
30337. A refrigerator works on the principle of __________ law of thermodynamics.
30338. The quorum for meeting of a committee shall such number above what percentage of total number of members of such committee?
30339. Who appoints returning officer for Election to the Committee of Societies?
30340. Which of the following is affected by the temperature ?
30341. Work done may be calculated by the expression for __________ processes.
30342. The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x1. x2, where A is a constant. The corresponding equation for ln y1, where y1 is the activity co-efficient of component 1, is
30343. The adiabatic throttling process of a perfect gas is one of constant enthalpy
30344. For spontaneous changes in an isolated system (S = entropy)
30345. A gas performs the maximum work, when it expands
30346. There is a change in __________ during the phase transition.
30347. Which of the following is Virial equation of state?
30348. Pressure-enthalpy chart is useful in refrigeration. The change in internal energy of an ideal fluid used in ideal refrigeration cycle is
30349. First law of thermodynamics deals with the
30350. Henry's law is closely obeyed by a gas, when its __________ is extremely high.
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