On volume basis, air contains following parts of oxygen _____________________?
(A) 21
(B) 23
(C) 25
(D) 77
(D) 79
In a non-flow reversible process for which p = (- 3V+ 15) x 105N/m2,V changes from 1 m to 2 m3. The work done will be about_______________?
(A) 100 xlOO5 joules
(B) lxlO5 joules
(C) 10 xlO5 joules
(D) 10 xlO5 kilo joules
(D) 10xl04kiojoules
Work done is zero for the following process_________________?
(A) constant volume
(B) free expansion
(C) throttling
(D) all Of the above
(D) none of the above
The basis for measuring thermodynamic property of temperature is given by___________________?
(A) zeroth law of thermodynamics
(B) first law of thermodynamics
(C) second law of thermodynamics
(D) third law of thermodynamics
(D) Avogadro’s hypothesis
Zeroth law of thermodynamics________________?
(A) deals with conversion of mass and energy
(B) deals with reversibility and irreversibility of process
(C) states that if two systems are both in equilibrium with a third system, they are in thermal equilibrium with each other
(D) deals with heat engines
(D) does not exist
Measurement of temperature is based on_________________?
(A) thermodynamic properties
(B) zeroth law of thermodynamics
(C) first law of thermodynamics
(D) second law of thermodynamics
(D) joule’s law
Addition of heat at constant pressure to a gas results in________________?
(A) raising its temperature
(B) raising its pressure
(C) raising its volume
(D) raising its temperature and doing external work
(D) doing external work
Total heat of a substance is also known as __________________?
(A) internal energy
(B) entropy
(C) thermal capacity
(D) enthalpy
(D) thermal conductance
Change in internal energy in a closed system is equal to heat transferred if the reversible process takes place at constant_______________?
(A) pressure
(B) temperature
(C) volume
(D) internal energy
(D) entropy
Isochoric process is one in which___________________?
(A) free expansion takes place
(B) very little mechanical work is done by the system
(C) no mechanical work is done by the system
(D) all parameters remain constant
(D) mass and energy transfer do not take place