A. Adiabatic
B. Isothermal
C. Isometric
D. None of these
A. Snow melts into water
B. A gas expands spontaneously from high pressure to low pressure
C. Water is converted into ice
D. Both B. & C
A. A heating effect
B. No change in temperature
C. A cooling effect
D. Either A. or (C)
A. Two different gases behave similarly, if their reduced properties (i.e. P, V and T) are same
B. The surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at
the critical temperature
C. No gas can be liquefied above the critical temperature, howsoever high the pressure may be.
D. The molar heat of energy of gas at constant volume should be nearly constant (about 3
calories)
A. ds = 0
B. ds 0
D. ds = Constant
A. (R/ΔH) (1/T1 – 1/T2)
B. (ΔH/R) (1/T1 – 1/T2)
C. (ΔH/R) (1/T2 – 1/T1)
D. (1/R) (1/T1 – 1/T2)
A. Simultaneous pressure & temperature change
B. Heating
C. Cooling
D. Both B. and C