Which of the following is not obtained by fractionation of coal tar ?
Fraction | Temperature Range | Temperature Range | Name of the fraction | Constituents | %(V/V) |
0C | K | ||||
1 | up to 170 | Up to 443 | Light oil | Benzene,Toulene,Xylene | 2.25 |
2 | 170−230 | 443−503 | Middle oil | Phenol,Cresol,Napthalene,Naphtol | 7.5 |
3 | 230−270 | 503−543 | Heavy (Cresote) | Cresol,Napthalene,Naphtol | 16.5 |
4 | 270−360 | 543−633 | Anthracene (green) oil | Anthracene | 12 |
5 | - | - | Oitch residue in still | Carbon | 56 |