Which of the following gases cannot be separated from air using fractional distillation?
A. Argon
B. Oxygen
C. Helium
D. Nitrogen
Answer:C
Which of the following gases cannot be separated from air using fractional distillation?
A. Argon B. Oxygen C. Helium D. Nitrogen
Explanation: Helium gas cannot be separated from air using fractional distillation.