Under what conditions gases can be liquefied? In which form LPG is filled in gas cylinder?
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Gases can be liquified under high heat and pressure. LPG is filled in a gas cylinder in its liquid form.
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I . Liquefaction of gases is the physical conversion of a gas into liquid state. Low temperature and high pressure are required to liquefy gases to liquids. On applying high pressure, the particles of gas move get so close that they start attracting each other sufficiently forming a liquid. When gas is compressed too much, heat is produced, so it is necessary to cool it. Cooling lowers the temperature of compressed gas and helps in liquefying it, Hence, a gas can be liquefied by applying high pressure and lowering the temperature (cooling).
LPG is in liquid form in gas cylinder
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