InterviewSolution
Saved Bookmarks
| 1. |
(a) Name the three classes in which elements are classified. Which was the first metal used by man? (b) Name the metal and non-metal present in abundance in the earth crust. |
|
Answer» (a) Name the three classes in which elements are classified. Which was the first metal used by man? (b) Name the metal and non-metal present in abundance in the earth crust. |
|