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Chemistry CBSE Live product
Class 8 (2026-27)
Particulate Nature of Matter
Diffusion and Compressibility
5.
Liquefaction
Question:
2
m.
Answer the following questions given below:
1. What is the role of pressure in liquefying a gas?
For the liquefaction of gases,
pressure must be removed to push the molecules close enough to form liquid
pressure must be applied to bring the particles closer by creating larger space between particles
pressure must be applied to bring the particles closer enough to form liquid
pressure must be applied to bring the particles far apart to form liquid
2. What would happen if the pressure on a liquefied gas is reduced?
The liquid may freeze into solid, as the temperature is low
The liquid remains unchaged as the pressure applied earlier is high
The liquid may vaporise and change back into a gas, depending on the suitable conditions
Freezes immediately, lowering the temperature
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