Question

CO2 is a gas write its any two gases propeties to justify it how can we liqriefy his gas

Answer 1

We can liquefy CO2 gas by compressing it and cooling down the temperatureCO2 is compressed above 60 psi and the temperature is about 88degree Fahrenheit 
And it is called as dry ice because just as ice it is also used for cooling purposes and also for storing and when it solidifes it becomes like an ice hence it is called as dry ice