1. The following are fine chemicals except
2. Chemicals that are large in quantity but with low purity are called
3. The chemical formula for rust is
4. The atomic number of Sulphur is
5. The deposition of a metal on iron material is called
6. The following are metalloids except
7. Chemical symbol of Silver is
8. An element X has 4 electrons and 2 neutrons. Find the atomic number of the element.
9. The combining power of an element is ________
10. The chemical formula of Calcium hydroxide is
