Ice vs.Dry ice

Chemistry Level pending

The above are the phase diagrams of water(H 2 _2 O) and carbon dioxide(CO 2 _2 ). The solid states of water and carbon dioxide are named as "ice" and "dry ice", respectively. Which of following is correct about these two materials?

Solid state of water(ice) can sublimate. Liquefaction of gas state of carbon dioxide is impossible. Solid state of carbon dioxide can be gas state only by sublimation. The boiling point of water is always 100°C.

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