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When we place a gas cylinder on a van and the van moves, does the kinetic energy of the molecules increase? Does the temperature increase?
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Do you expect the gas in a cooking gas cylinder to obey the ideal gas equation?
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Can we define the temperature of (a) vacuum, (b) a single molecule?
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Comment on the following statement: the temperature of all the molecules in a sample of a gas is the same.
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Consider a gas of neutrons. Do you expect it to behave much better as an ideal gas as compared to hydrogen gas at the same pressure and temperature?
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It is said that the assumptions of kinetic theory are good for gases having low densities. Suppose a container is so evacuated that only one molecule is left in it. Which of the assumptions of kinetic theory will not be valid for such a situation? Can we assign a temperature to this gas?
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A gas is kept in an enclosure. The pressure of the gas is reduced by pumping out some gas. Will the temperature of the gas decrease by Charles's low?
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If the molecules were not allowed to collide among themselves, would you expect more evaporation or less evaporation?
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Is it possible to boil water at room temperature, say 30°C? If we touch a flask containing water boiling at this temperature, will it be hot?
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When you come out of a river after a dip, you feel cold. Explain.
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Which of the following parameters is the same for molecules of all gases at a given temperature?
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The pressure of an ideal gas is written as \[P = \frac{2E}{3V}\] . Here E refers to
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The mean square speed of the molecules of a gas at absolute temperature T is proportional to
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The calorie is defined as 1 cal = 4.186 joule. Why not as 1 cal = 4 J to make the conversions easy?
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The process on an ideal gas, shown in figure, is
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A calorimeter is kept in a wooden box to insulate it thermally from the surroundings. Why is it necessary?
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Which of the following quantities is the same for all ideal gases at the same temperature?
(a) The kinetic energy of 1 mole
(b) The kinetic energy of 1 g
(c) The number of molecules in 1 mole
(d) The number of molecules in 1 g
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Find the number of molecules of an ideal gas in a volume of 1.000 cm3 at STP.
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A gas cylinder has walls that can bear a maximum pressure of 1.0 × 106 Pa. It contains a gas at 8.0 × 105 Pa and 300 K. The cylinder is steadily heated. Neglecting any change in the volume, calculate the temperature at which the cylinder will break.
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The temperature and pressure at Simla are 15.0°C and 72.0 cm of mercury and at Kalka these are 35.0°C and 76.0 cm of mercury. Find the ratio of air density at Kalka to the air density at Simla.
Use R=8.314J K-1 mol-1
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