CBSE Class 9 Answered
(a)Dry ice is compressed at high pressure. What happens when the pressure is released?
(b)Why is it necessary to cool the gas while applying pressure to liquefy?
Asked by Topperlearning User | 06 May, 2014, 01:36: PM
Expert Answer
(a)Dry ice (solid CO2) gets converted into gaseous state on releasing the pressure.
(b)Cooling the gas lowers the temperature of compressed gas and helps in liquefying it.
Answered by | 06 May, 2014, 03:36: PM
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