Q. 1st law of thermodynamics is nothing but the law of conservation of

View solution

Q. A refrigeration cycle is a reversed heat engine. Which of the following has the maximum value of the co-efficient of performance (COP) for a given refrigeration effect ?

View solution

Q. In a working refrigerator, the value of COP is always

View solution

Q. __________ increases with increase in pressure.

View solution

Q. A refrigerator may be termed as a

View solution

Q. For a stable phase at constant pressure and temperature, the fugacity of each component in a binary system __________ as its mole fraction increases.

View solution

Q. The number of degrees of freedom for an azeotropic mixture in a two component vapour-liquid equilibria is/are

View solution

Q. Any substance above its critical temperature exists as

View solution

Q. Which of the following decreases with increase in pressure ?

View solution

Q. Isentropic process means a constant __________ process.

View solution

Q. In case of steady flow compression polytropic process (PVⁿ = constant), the work done on air is the lowest, when

View solution

Q. A liquid under pressure greater than its vapour pressure for the temperature involved is called a __________ liquid.

View solution

Q. For a real gas, the chemical potential is given by

View solution

Q. At absolute zero temperature, all substances have the same

View solution

Q. Lowering of condenser temperature (keeping the evaporator temperature constant) in case of vapour compression refrigeration system results in

View solution

Q. Pick out the correct statement.

View solution

Q. Grams of butane (C₄H₁₀) formed by the liquefaction of 448 litres of the gas (measured at (STP) would be

View solution

Q. The thermodynamic law, PVʸ = constant, is not applicable in case of

View solution

Q. When a gas in a vessel expands, its internal energy decreases. The process involved is

View solution

Q. A system is said to be isopiestic, if there is no __________ change.

View solution