- Trending Categories
Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Explain this diagram on the fractional distillation of air.
"
Fractional distillation of air:
About 78 percent of the air is nitrogen and 21 percent is oxygen. These two gases can be separated by fractional distillation of liquid air.
Liquefying the air:
Air is filtered to remove dust.
![](/assets/questions/media/95298-12349-1599974735.png)
It is then cooled in stages until it reaches –200°C. At this temperature, it is a liquid. The air has been liquefied.
![](/assets/questions/media/95298-12349-1599975131.png)
Here's what happens as the air liquefies:
- Water vapor condenses and is removed using absorbent filters.
- Carbon dioxide freezes at -79°C and is removed.
- Oxygen liquefies at -183°C
- Nitrogen liquefies at -196°C
- The liquid nitrogen and oxygen are then separated by fractional distillation.
![](/assets/questions/media/95298-12349-1599975341.png)
The liquefied air is passed into the bottom of a fractional distillation column. Just as in the columns used to separate oil fractions, the column is warmer at the bottom than it is at the top.
Advertisements