thermodynamics

In the polytropic process pvn = Constant if n = 1 the process is termed as

• A.Constant volume

• B.Constant pressure

• C.Constant temperature

• D.Adiabatic

• E.Isothermal

A law which is applicable only to ideal vapours and liquids, that equates the equilibrium partial pressures of a solution component in the coexisting phases, is known as

• A.Henry's law

• B.Roult's law

• C.Joule's law

• D.Maxwell's equation

• E.Fick's law

The molecular volume of any perfect gas at 600 x 103 N/m3 and 27?C will be

• A.2.085 m3/kg mol

• B.4.17 m3/kg mol

• C.41.7 m3/kg mol

• D.85.3 m3/kg mol

• E.47.7 m3/kg mol

An open system

• A.Is a specified region where transfers of energy and/or mass take place

• B.Is a region of constant mass and only energy is allowed to cross the boundaries

• C.Cannot transfer either energy or mass to or from the surroundings

• D.Has a mass transfer across its boundaries, and the mass within the system is not necessarily constant

• E.None of the above

A system consisting of more than one phase is known as

• A.Open system

• B.Closed system

• C.Isolated system

• D.Non-uniform system

• E.Heterogeneous system

Whenever a system undergoes either a change in state or an energy or mass transfer at a steady state, it is said to undergo

• A.Achange of state

• B.A process

• C.A steady state transfer

• D.An equilibrium

• E.A thermodynamic change

The processes or systems that do not involve heat are called

• A.Isothermal processes

• B.Equilibrium processes

• C.Thermal processes

• D.Steady processess

• E.Adiabatic processe

Second law of theromodynamics defines

• A.Heat

• B.Work

• C.Enthalpy

• D.Entropy

• E.Internal energy

In a thermal power plant thermodynamic cycle used is

• A.Erricson

• B.Brayton

• C.Joule

• D.Carnot

• E.Rankine

For the same heat inpur and same compression ratio

• A.Otto cycle and Diesel cycle are equally efficient

• B.Otto cycle is less efficient than diesel cycle

• C.Efficiency depends mainly on working substance

• D.None of the above

• E.all of the above