Physics
Heat
Easy
Question
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 :
- P
- 2P0
The correct answer is: 2P0
Related Questions to study
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
Physics
If N is Avogadro's number, then the number of molecules in 6 g of hydrogen at NTP is
If N is Avogadro's number, then the number of molecules in 6 g of hydrogen at NTP is
PhysicsHeat
Physics
A gas is at on atmosphere. To what pressure it should be subjected at constant temperature so as to have of its initial volume?
A gas is at on atmosphere. To what pressure it should be subjected at constant temperature so as to have of its initial volume?
PhysicsHeat
Physics
If the volume of air at 0°C and 10 atmospheric pressure is 10 Iitre, its volume , in
Iitre, at normal temperature and pressure would be
If the volume of air at 0°C and 10 atmospheric pressure is 10 Iitre, its volume , in
Iitre, at normal temperature and pressure would be
PhysicsHeat
Physics
It is required to double the pressure of a gas in a container at 27°C by heating it. To what temperature the gas should be raised?
It is required to double the pressure of a gas in a container at 27°C by heating it. To what temperature the gas should be raised?
PhysicsHeat
Physics
A sample of a perfect gas occupies a volume v at a pressure P and obsolete temperature T. The mass of each molecule is m, which of the following expression s given the number of molecules in the sample?
A sample of a perfect gas occupies a volume v at a pressure P and obsolete temperature T. The mass of each molecule is m, which of the following expression s given the number of molecules in the sample?
PhysicsHeat
Physics
In order to increase the volume of a gas to 3 times constant pressure at 40oC, the final temperature should be
In order to increase the volume of a gas to 3 times constant pressure at 40oC, the final temperature should be
PhysicsHeat
Physics
If masses of all molecules of a gas are halved and their speed doubled. then the ratio of initial and fin al pressure is:
If masses of all molecules of a gas are halved and their speed doubled. then the ratio of initial and fin al pressure is:
PhysicsHeat
Physics
The average kinetic energy of H2 molecules at 300 K is E. At the same temperature the average kinetic energy of 02 molecule is:
The average kinetic energy of H2 molecules at 300 K is E. At the same temperature the average kinetic energy of 02 molecule is:
PhysicsHeat
Physics
Molecular hydrogen at one atmosphere and helium at two atmospheres occupy volume V each at the same temperature . The r.m.s velocity of hydrogen molecules is x times the r.m.s velocity of helium molecules . What is the value of x?
Molecular hydrogen at one atmosphere and helium at two atmospheres occupy volume V each at the same temperature . The r.m.s velocity of hydrogen molecules is x times the r.m.s velocity of helium molecules . What is the value of x?
PhysicsHeat
Physics
What is the ratio of the total energy of al l the molecules of one mole of 0 2 to the total energy of all the molecules of two moles of helium at the same temperature?
What is the ratio of the total energy of al l the molecules of one mole of 0 2 to the total energy of all the molecules of two moles of helium at the same temperature?
PhysicsHeat
Physics
On the basis of kinetic theory of gases , the mean K.E of 1 mole per degree of freedom is
On the basis of kinetic theory of gases , the mean K.E of 1 mole per degree of freedom is
PhysicsHeat
Physics
Th e ratio of the number of moles of a monoatomic to a Polyatomic gas in a mixture of the two , behaving as an diatomic gas is : (vibrational modes of freedom is to be
ignored)
Th e ratio of the number of moles of a monoatomic to a Polyatomic gas in a mixture of the two , behaving as an diatomic gas is : (vibrational modes of freedom is to be
ignored)
PhysicsHeat
Physics
The average translational kinetic energy of the molecules of a gas w ill be doubled if at constant
The average translational kinetic energy of the molecules of a gas w ill be doubled if at constant
PhysicsHeat