16601. Which of the following will increase the volume of a real gas by four times ?
16602. Goods issued as free samples are deducted from which account?
16603. The equation, PV = nRT, is best obeyed by gases at
16604. Internal energy of an element at 1 atm and 25° C is __________ kcal/kg.mole.
16605. Which of the following liquid metals has the highest thermal conductivity ?
16606. Which of the following has the least thermal efficiency ?
16607. If the internal energy of an ideal gas decreases by the same amount as the work done by the system, then the
16608. Joule-Thomson Co-efficient at any point on the inversion curve is
16609. What is auditor’s plan of action?
16610. Number of components (C), phase (P) and degrees of freedom (F) are related by Gibbs phase rule as
16611. The value of Cp & Cv respectively for monoatomic gases in Kcal/kg Mole . °K are
16612. Teeming and landing comes under
16613. In case of a close thermodynamic system, there is __________ across the boundaries.
16614. During a reversible isothermal expansion of an ideal gas, the entropy change is
16615. As the temperature is lowered towards the absolute zero, the value of, then approaches
16616. How many queen bees are usually found in a bee hive?
16617. Which of the following is not affected by temperature changes ?
16618. For an ideal gas, the activity co-efficient is
16619. Those solutions in which there is no volume change upon mixing the components in the liquid state and which, when diluted do not undergo any heat change (i.e. heat of dilution is zero), are called __________ solutions.
16620. Generation of heat by friction is an example of a/an __________ change.
16621. A domestic refrigerator has a/an __________ cooled condenser.
16622. The extensive properties are
16623. The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law )
16624. If we increase the pressure on a substance (which is at its triple point), then the triple point
16625. In an ideal refrigeration cycle, the change in internal energy of the fluid is
16626. Free energy
16627. "If different processes are used to bring about the same chemical reaction, the enthalpy change is same for all of them". This is __________ law.
16628. Fugacity is a measure of the
16629. The quantitative effect of temperature on chemical equilibrium is given by the
16630. For an irreversible process involving only pressure-volume work
16631. Ideal refrigeration cycle is
16632. The following heat engine produces power of 100000 kW. The heat engine operates between 800 K and 300 K. It has a thermal efficiency equal to 50% of that of the Carnot engine for the same temperature. The rate at which heat is absorbed from the hot reservoir is
16633. Refrigeration cycle
16634. The enthalpy change when ammonia gas is dissolved in water is called the heat of
16635. The value of Joule-Thomson co-efficient, in case where cooling occurs after the throttling process is
16636. Adiabatic compression of a saturated water vapour makes it
16637. The specific heat of saturated water vapour at 100°C is
16638. For a multicomponent system, the term chemical potential is equivalent to the
16639. The change in Gibbs freee energy for vaporisation of a pure substance is
16640. Critical compressibility factor for all substances
16641. What is the degree of freedom for two mis-cible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope ?
16642. For a given substance at a specified temperature, activity is __________ to fugacity.
16643. In case of vapour compression refrigeration system, elevating the evaporator temperature (keeping the condenser temperature constant) results in
16644. For water at 300°C, it has a vapour pressure 8592.7 kPa and fugacity 6738.9 kPa Under these conditions, one mole of water in liquid phase has a volume of 25.28 cm3 and that in vapour phase in 391.1 cm3.Fugacity of water (in kPa) at 9000 kPa will be
16645. __________ equation predicts the activity co-efficient from experimental data.
16646. As the temperature is lowered towards the absolute zero, the value of the quantity approaches
16647. An ideal liquid refrigerant should
16648. If the heat of solution of an ideal gas in a liquid is negative, then its solubility at a given partial pressure varies with the temperature as
16649. In case of a reversible process (following pvn = constant), work obtained for trebling the volume (v1 = 1 m3 and v2 3 m3 ) is max imum, when the value of 'n' is
16650. The Carnot co-efficient of performance (COP) of a domestic air conditioner compared to a household refrigerator is