No liquid can exist as liquid at____________________?
(A) – 273 °K
(B) vacuum
(C) zero pressure
(D) centre of earth
(D) in space
The pressure’of a gas in terms of its mean kinetic energy per unit volume E is equal to________________?
(A) E/3
(B) E/2
(C) 3E/4
(D) 2E/3
(D) 5E/4
The unit of power in S.I. units is_______________________?
(A) newton
(B) pascal
(C) erg
(D) watt
(D) joule
Superheated vapour behaves___________________?
(A) exactly as gas
(B) as steam
(C) as ordinary vapour
(D) approximately as a gas
(D) as average of gas and vapour
Intensive property of a system is one whose value____________________?
(A) depends on the mass of the system, like volume
(B) does not depend on the mass of the system, like temperature, pressure, etc
(C) is not dependent on the path followed but on the state
(D) is dependent on the path followed and not on the state
(D) remains constant
Characteristic gas constant of a gas is equal to______________________?
(A) C/Cv
(B) Cv/Cp
(C) Cp – Cv
(D) Cp + Cv
(D) Cp x Cv
The ratio of two specific heats of air is equal to____________________?
(A) 0.17
(B) 0.24
(C) 0.1
(D) 1.41
(D) 2.71
Which law states that the internal energy of a gas is a function of temperature__________________?
(A) Charles’ law
(B) Joule’s law
(C) Regnault’s law
(D) Boyle’s law
(D) there is no such law
Which law states that the specific heat of a gas remains constant at all temperatures and pressures______________________?
(A) Charles’ Law
(B) Joule’s Law
(C) Regnault’s Law
(D) Boyle’s Law
(D) there is no such law
An open system is one in which____________________?
(A) mass does not cross boundaries of the system, though energy may do so
(B) neither mass nor energy crosses the boundaries of the system
(C) both energy and mass cross the boundaries of the system
(D) mass crosses the boundary but not the energy
(D) thermodynamic reactions do not occur