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Chemistry CBSE Live product
Class 9 (2025-26)
Matter in our surroundings
Temperature scales, pressure on states of matter, and evaporation
8.
Effects of pressure
Question:
2
m.
Choose a correct answer to the question given below.
When a gas is cooled and pressure is increased, its particles come very close together and it changes into a liquid.
i.
Liquefaction of a gas can be achieved by
decreasing temperature and increasing pressure
increasing temperature and increasing pressure
increasing temperature and decreasing pressure
decreasing both temperature and pressure
ii.
Liquefaction of gases shows that
gases cannot be compressed
state of matter can change with pressure and temperature
liquids cannot evaporate
only solids have fixed shape
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