Question

III .Fill in the blanks 1. The minerals from which metals can be conveniently and profitably extracted are called ______ 2. _______ is the process in which a carbonate ore is heated below melting point in absence of air 3. ______ is the process in which metal oxides are reduced to molten metal by using carbon 4. The process of purifying impure metal to obtain pure metal is called ________ 5. _____________ is the eating up of metal by action of air, moisture on their surface 6. ________ is the homogenous mixture of two or more metals 7. The elements that exhibit properties of both metals and non – metals are called ____________

Answer 1

Explanation:

1.Ores

2.Calcination

4.Refining of metal

5.Corrosion

6.Alloy

7.Metalloids