Physics
Heat
Easy
Question
1g mole of an ideal gas at STP is subjected to a reversible adiabatic expansion to double its volume. Find the change in internal energy 
- 1169.5 J
- 769 .5 J
- 1369.5 J
- 969 .5 J
The correct answer is: 1369.5 J
Related Questions to study
Physics
A gas mixture of 2 moles of oxygen and a 4 mole of Ar at temperature T. Neglecting all vibrations modes, the total internal energy of the system is
A gas mixture of 2 moles of oxygen and a 4 mole of Ar at temperature T. Neglecting all vibrations modes, the total internal energy of the system is
PhysicsHeat
Physics
A gas undergoes a cyclic process ABCDA as shown in the figure. The part ABC of process is semi-circular. The work done by the gas is:
A gas undergoes a cyclic process ABCDA as shown in the figure. The part ABC of process is semi-circular. The work done by the gas is:
PhysicsHeat
Physics
Q cal of heat is required to raise the temperature of 1mole of a monatomic gas from 20°C to 30°C at constant pressure. The amount of heat required to raise the temperature of 1 mole of diatomic gas from 20°C to 25°C at constant pressure is:
Q cal of heat is required to raise the temperature of 1mole of a monatomic gas from 20°C to 30°C at constant pressure. The amount of heat required to raise the temperature of 1 mole of diatomic gas from 20°C to 25°C at constant pressure is:
PhysicsHeat
Physics
When an ideal monoatomic gas is heated at constant pressure, fraction of heat energy supplied which increases the internal energy of gas is
When an ideal monoatomic gas is heated at constant pressure, fraction of heat energy supplied which increases the internal energy of gas is
PhysicsHeat
Physics
The ratio of work done by an idea l diatomic gas to the heat supplied by the gas in an isobaric process is
The ratio of work done by an idea l diatomic gas to the heat supplied by the gas in an isobaric process is
PhysicsHeat
Physics
Helium gas is subjected to a polytropic process in which t he heat supplied to the gas is four times the work one by it. The molar heat capacity of the gas for the process is: (R is universal gas constant)
Helium gas is subjected to a polytropic process in which t he heat supplied to the gas is four times the work one by it. The molar heat capacity of the gas for the process is: (R is universal gas constant)
PhysicsHeat
Physics
A n ideal gas is taken along the path AB as shown in the figure .The work done by the g as is
A n ideal gas is taken along the path AB as shown in the figure .The work done by the g as is
PhysicsHeat
Physics
A certain mass of an ideal diatomic gas contained in a closed vessel is heated ; it is observed that the temperature remains constant; however, half the amount of gas gets dissociated; the ratio of the heat supplied to the gas initial internal energy of the gas will be
A certain mass of an ideal diatomic gas contained in a closed vessel is heated ; it is observed that the temperature remains constant; however, half the amount of gas gets dissociated; the ratio of the heat supplied to the gas initial internal energy of the gas will be
PhysicsHeat
Physics
The internal energy of an ideal diatomic gas corresponding to volume V and pressure P is U = 2.5 PV. The gas expands from 1 Iitre to 2 Iitre at a constant pressure of one atmosphere . The heat supplied to gas is
The internal energy of an ideal diatomic gas corresponding to volume V and pressure P is U = 2.5 PV. The gas expands from 1 Iitre to 2 Iitre at a constant pressure of one atmosphere . The heat supplied to gas is
PhysicsHeat
Physics
Internal energy of an ideal gas depends upon
Internal energy of an ideal gas depends upon
PhysicsHeat
Physics
Two systems in thermal equilibrium with a third system seperately are in thermal equilibrium with each other. The above statement is
Two systems in thermal equilibrium with a third system seperately are in thermal equilibrium with each other. The above statement is
PhysicsHeat
Physics
A system is said to be in thermal equilibrium if
A system is said to be in thermal equilibrium if
PhysicsHeat
Physics
A volume V of air saturated with water vapour exerts a pressure P. Pressure of saturated vapour is P0 - If the volume is made V/2 isothermally, the final pressure will
be :
A volume V of air saturated with water vapour exerts a pressure P. Pressure of saturated vapour is P0 - If the volume is made V/2 isothermally, the final pressure will
be :
PhysicsHeat
Physics
During an experiment an ideal gas is found to obey an additional law v2 P = constant. The gas is initially at temperature T and volume V. When it expands to a volume 2 V, the temperature becomes
During an experiment an ideal gas is found to obey an additional law v2 P = constant. The gas is initially at temperature T and volume V. When it expands to a volume 2 V, the temperature becomes
PhysicsHeat
Physics
Two gases A and B having the same temperature T, same pressure P and same volume V are mixed. If the mixture s at the same temperature and occupies a volume V, the pressure of the mixture is
Two gases A and B having the same temperature T, same pressure P and same volume V are mixed. If the mixture s at the same temperature and occupies a volume V, the pressure of the mixture is
PhysicsHeat
