Critical temperature of CO2 is 31.2 °C . In summer , the room temperature is 40 °C , then

Q: Critical temperature of CO₂ is 31.2 °C . In summer , the room temperature is 40 °C , then

(a) CO₂ cannot be liquefied

(b) CO₂ can be liquefied with increase of pressure

(d) CO₂ cannot be liquefied if temperature of CO₂ is decreased below 31.2 °C

Click to See Answer :

Ans: (b)

Sol: Gases cannot be liquefied above critical temperature . But by increasing pressure CO₂ can be liquefied .