WorksheetsChater 10 Thermodynamics of Gases
Total questions: 8
Worksheet time: 9mins
The above graph which is drawn to scale, shows two isotherms at temperatures of T and T1 for a fixed mass of ideal gas. What is the relation between T1 and T?
T1 =½ T
T1 =¼ T
T1 =2 T
T1 =4 T
The figure shows a complete cycle of change for an ideal gas. Heat enters the gas during the stages
PQ and QR
QR and RS
RS and SP
SP and QR
One mole of an ideal gas undergoes an adiabatic process, its temperature increases by ∆T and its volume changes by ∆V. Which of the following is correct?
Pressure of the gas decreases
Work done by gas is p∆V
Internal energy increases by Cv,m∆T
Heat flows out of the gas
Which of the following relation is not true for a mole of an ideal gas which is compressed adiabatically?
∆Q = 0
TVγ-1
pV=RT
pV= constant
An ideal gas undergoes adiabatic changes. Which of the following graphs, show the relation between its temperature T and its volume V?
When a gas expands isothermally, it does 50 J of work. What is the change in its internal energy ΔU, and the heat transferred Q?
ΔU = 0 , Q= +50 J
ΔU = 0 , Q= -50 J
ΔU = +50 J, Q= 0
ΔU = - 50 J, Q= 0
A monatomic gas expands adiabatically from the state X to the state Y as shown in the figure. What is the change in the internal energy of the gas?
220 kJ
340 kJ
660 kJ
1.10 MJ
The variation of internal energy per mole U with temperature of a gas is as shown in the graph. What is the ratio of the principal molar heat capacities of the gas?
1.33
1.20
1.40
1.67
