Consider a gas sample contained in a vessel at 600 K shown in figure (i). If the boiling point of the gas is 400 K, which figure (ii)-(iv) depicts the gas when the temperature is decreased from 600 K to 300 K? If the boiling point of the gas is 250 K, which figure represents the gas when the temperature is at 300 K?

• A. Figure (iii) depicts the gas if its boiling point is 400 K and when the temperature is at 300 K.
  Figure (ii) depicts the gas if its boiling point is 250 K and when the temperature is at 300 K.
• B. Figure (ii) depicts the gas if its boiling point is 400 K and when the temperature is at 300 K.
  Figure (iv) depicts the gas if its boiling point is 250 K and when the temperature is at 300 K.
• C. Figure (iv) depicts the gas if its boiling point is 400 K and when the temperature is at 300 K.
  Figure (iii) depicts the gas if its boiling point is 250 K and when the temperature is at 300 K.
• D. Figure (iii) depicts the gas if its boiling point is 400 K and when the temperature is at 300 K.
  Figure (iv) depicts the gas if its boiling point is 250 K and when the temperature is at 300 K.
• E. Figure (ii) depicts the gas if its boiling point is 400 K and when the temperature is at 300 K.
  Figure (ii) depicts the gas if its boiling point is 250 K and when the temperature is at 300 K.

Answer: (B)