For an isochoric process the temperature at which the pressure of a gas will be double that of its pressure at 270$$^{0}$$ C is
Explanation
A car tyre has air at 1.5 atm at 300 K.If P increases to 1.75 atm with volume same, the temperature will be ____
The volume of a gas is 5 litres at N.T.P. what will be its volume at 273$$^{0}$$ C and at a pressure of four atmospheres
A gas at 27$$^{0}$$C and pressure of 30atm is allowed to expand to atmospheric pressure and volume 15 times larger. The final temperature of gas is
A sample of an ideal gas occupies a volume V at pressure P and absolute temperature T. The mass of each molecule is m. The equation for density is
At 20$$^{o}C$$ temperature and 1atmosphere pressure if a gas has a volume of 293 ml .Its volume at NTP is
The pressure of a gas is increased four times and its absolute temperature two times. The ratio of its final volume to its initial volume is
A cylinder contains gas at a pressure of 2.5 atm. Due to leakage, the pressure falls to 2 atm, after sometime. The percentage of the gas which is leaked out is
The diagram shows the graphs of pressure vs density for a given mass of an ideal gas at two temperatures T$$_{1}$$ and T$$_{2}$$ :
A given amount of gas is heated until both its pressure and volume are doubled. If initial temperature is 27$$^{0}$$ C, its final temperature is
One litre of helium under a pressure of 2 atm and at 27$$^{0}$$C is heated until its pressure and volume are doubled. The final temperature attained by the gas is
The volume of a gas at $$27^o$$C and 2 atmospheric pressure is 2 litres. If the pressure is doubled and absolute temperature is made half, the new volume of gas is
A closed vessesl contains 8 gms of oxygen and 7gm of Nitrogen. Total pressure at a certain temperature is 10 atm. When all the oxygen is removed from the system without chage in temperature then the pressure will be
The volume occupied by 8 gm of oxygen at S.T.P. is
An air bubble rises from bottom to top of a liquid of density 1.5 g/cm$$^{3}$$. If its volume is doubled, the depth of liquids is
If pressure of an ideal gas contains in a closed vessel is increased by 0.5% the increase in temperature is 20k the initial temperature of the gas is
Two closed vessels of the equal volume contain air at 105kPa at 300K and are connected through a narrow tube. If one of the vessels is now maintained at 300K and the other at 400K then the pressure becomes.
At the top of a mountain a thermo meter read 7$$^{0}$$ C and barometer reads 70 cm of Hg. At the bottom of the mountain the barometer reads 76cm of Hg and thermometer reads 27$$^{0}$$ C. The density of air at the top of mountains is ______ times the density at the bottom.
At a given temperature and pressure 64 gm of Oxygen and X gm of H$$_{2}$$ occupy the same volume. Then x= ......gm
A one litre sphere and a two litre sphere are connected with a capillary tube of negligible volume. They contain an ideal gas at 27$$^{0}$$C at a pressure of 100cm of Hg. Keeping the temperature of one litre sphere constant at 27$$^{0}$$C, if temperature of two litre sphere is increased to 127$$^{0}$$C, then the final pressure is
At the bottom of a lake where the temperature is $${7}^{0}\,C$$ the pressure is $$2.8$$ atmosphere. An air bubble of radius $$1\, cm$$ at the bottom rises to the surface. Where the temperature is $${27}^{0}\, C$$. The radius of the air bubble at the surface is
During an experiment an ideal gas is found to obey an additional law V$$^{2}$$P= constant. The gas is initially at a temperature T and volume V. When it expands to a volume 2V, the temperature becomes
Two gases A and B having same pressure P, volume V and temperature T are mixed. if the mixture has volume and temperature as V and T respectively the pressure of mixture is
A vessel is filled with an ideal gas at a pressure of 200 atm and is at a temperature of 27$$^{0}$$ C. One half of the mass of the gas is removed from the vessel and the temperature of the remaining gas is increased to 87$$^{0}$$ C. At this temperature,the pressure of the gas will be
If $$\rho $$ is the density, m is the mass of 1 molecule and K is the Boltzman constant for a gas then the pressure of the gas is:
A gas is heated through $$1^{o}\ C$$ in a closed vessel. Its pressure is increased by $$0.4$$%. The initial emperature of the gas is
A given amount of a gas is heated till the volume and pressure both increase by $$2\%$$ each the percentage change in temperature of the gas is equal to nearly
Two sample of Hydrogen and Oxygen of same mass possess same pressure and volume. The ratio of their temperature is
Two gases A&B having same pressure P, volume V and absolute temperature T are mixed. If the mixture has volume and temperature as V & T respectively then the pressure of mixture is
One litre of Helium gas at a pressure of 76 cm - Hg and temperature 27$$^{0}$$C is heated till its pressure and volume are doubled. The final temperature attained by the gas is
The mass of oxygen gas occupy a volume of 11.2 lit at a temperature 27$$^{0}$$C and a pressure of 76 cm of mercury in kilogram is (molecular weight of oxygen =32)
A vessel is filled with an ideal gas at a pressure of 10 atmospheres and temp 27$$^{0}$$C . Half of the mass of the gas is removed from the vessel & the temp. of the remaining gas is increased to 87$$^{0}$$C . Then the pressure of the gas in the vessel will be
2 grams of monoatomic gas occupies a volume of 2 litres at a pressure of $$8.3\times 10^{5}Pa$$ and 127$$^{0}$$C . Find the molecular weight of the gas. (R=8.3 joule/mole/K)
A reciever has a pressure of 144cm of Hg. After two strokes with an exhaust pump, the pressure is 36cm of Hg. After another two strokes the pressure will be.
Three flasks of identical volume are filled separately by
(a) 1 gram of $$H_{2}$$
(b) 1 gram of $$O_{2}$$
(c) 1 gram of $$CO_{2}$$
They are immersed in a tank of water so that all of them attain same temperature. The pressures $$P_{1},P_{2}$$ and $$P_{3}$$ have the on.
A closed copper vessel contains water equal to half of its volume when the temperature. Of the vessel is raised to 447$$^{0}$$c the pressure of steam in the vessel is (Treat steam as an ideal gas, R=8310 J/k / mole, density of water =1000 kg/m$$^{3}$$ molecular weight of water =18 )
A sample of $$O_{2}$$ gas and a sample of hydrogen gas both have the same no. of moles, the same volume and same pressure. Assuming them to be perfect gases, the ratio of temperature of oxygen gas to the temperature of hydrogen gas is :
The density of a gas at N.T.P. is 1.5gm/lit. its density at a pressure of 152cm of Hg and temperature 27$$^{0}$$ C
An electric bulb of $$250cc$$ was sealed off at a pressure $$10^{-3}$$ mm of Hg and temperature $$27^{0}$$ C. The number of molecules present in the gas is
Two identical containers connected by a fine capillary tube contain air at N.T.P. if one of those containers is immersed in pure water, boilling under normal pressure then new pressure is
A flask is filled with 13 gm of an ideal gas at 27$$^{0}$$C its temperature is raised to 52$$^{0}$$C . The mass of the gas that has to be released to maintain the temperature of the gas in the flask at 52$$^{0}$$C and the pressure remaining the same is
At what temperature will the hydrogen molecules escape from Earth's surface?
During an experiment an ideal gas is found to obey an additional gas law VT =constant. The gas is initially at temperature T and pressure P. When it is heated to the temperature 2T, the resulting pressure is
If the number of degrees of freedom of a gas is f, then the value of $$\gamma $$ will be
The total kinetic energy of $$8$$ litres of helium molecules at $$5 $$ atmosphere pressure will be
If the pressure of a gas contained in a closed vessel increases by x% when heated by 1$$^{0}$$C , its initial temperature is
The average kinetic energy of hydrogen molecule at NTP will be
The pressure of a certain mass of gas at 27$$^{0}$$C is 84cm of Hg. If 25% of the gas is now introduced into the same vessel at the same temperature, the final pressure of the gas will be in cm of Hg
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