Question

Crossing which option gives a phase change directly from solid to gas in the given diagram for carbon dioxide (CO${}_2$)?

• A. line XZ
  
• B. point Z
• C. line XY
• D. line WX
• E. point Y

Answer 1

The correct option is D line WX

Crossing line WX gives a phase change directly from solid to gas in the given diagram for carbon dioxide (CO2).