Question

Nitrogen is obtained from fractional distillation of liquified air at about:

• A. $-{196}^{o}C$
• B. $-{186}^{o}C$
• C. $-{176}^{o}C$
• D. $-{166}^{o}C$

Answer 1

The correct option is A $-{196}^{o}C$

Nitrogen is obtained from fractional distillation of liquefied air at about $-{196}^{o}C$. The boiling point of liquid nitrogen is $-{196}^{o}C$.