|
Commercial vulcanisation of rubber involves |
|
|||
|
(a) |
Sulphur |
(b) |
carbon |
|
|
(c) |
Phosphorus |
(d) |
selenium |
|
|
Commercial vulcanisation of rubber involves |
|
|||
|
(a) |
Sulphur |
(b) |
carbon |
|
|
(c) |
Phosphorus |
(d) |
selenium |
|