Hydrogen, oxygen and carbon dioxide are taken in containers of 2l volume each. Compare the number of molecules of the three gases under same conditions of temperature and pressure.
A
Hydrogen > oxygen > carbon dioxide
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B
Hydrogen = oxygen > carbon dioxide
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C
Hydrogen > oxygen = carbon dioxide
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D
All have equal
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Solution
The correct option is D All have equal When temperature and pressure are same, the gas molecules possess same kinetic energy and when they are taken in equal volumes, for making same number of collisions on the walls of the containers to exert same pressure all the gases should contain equal number of molecules.