Advertisements
Advertisements
प्रश्न
Give reasons for the following:
Mountaineers carry oxygen cylinders with them.
Advertisements
उत्तर
Atmospheric pressure is low at high altitudes. The volume of air increases and the air becomes less dense because the volume is inversely proportional to density. Hence, a lesser volume of oxygen is available for breathing. Thus, mountaineers have to carry oxygen cylinders with them.
APPEARS IN
संबंधित प्रश्न
Explain Charles's law on the basis of the kinetic theory of matter.
How did Charles's law lead to the concept of an absolute scale of temperature?
Choose the correct answer:
The volume-temperature relationship is given by
What will be the minimum pressure required to compress 500 dm3 of air at 1 bar to 200 dm3 temperature remaining constant?
Calculate the final volume of a gas 'X' if the original pressure of the gas at STP is doubled and its temperature is increased three times.
2500 cm3 of hydrogen is taken at STP. The pressure of this gas is further increased by two and a half times (temperature remaining constant). What volume will hydrogen occupy now?
An LPG cylinder can withstand a pressure of 14.9 atmospheres. The pressure gauge of the cylinder indicates 12 atmospheres at 27°C. Because of a sudden fire in the building, the temperature rises. At what temperature will the cylinder explode?
Give its
(i) graphical representation,
(ii) mathematical expression
(iii) significance
It is required to reduce the volume of a gas by 20% by compressing it at a constant pressure. To do so, the gas has to be cooled. If the gas attains a final temperature of 157°C, find the initial temperature of the gas.
The following question refers to one mole of chlorine gas.
What volume will it occupy at 273°C?
