TEST - 43 ( Principles of Metallurgy )
EFFORTS NEVER FAIL
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NAME : *
1.  The substance added to the ore to remove gangue from it is called *
1 point
2.                   are a process of heating the ore strongly in the absence of air or oxygen. *
1 point
3.                     is a process of heating the ore strongly in a free supply of air or oxygen. *
1 point
4. A metallic compound occurring in the earth crust along with impurities is called *
1 point
5. A mineral from which a metal can be extracted economically and conveniently is called *
1 point
6. Blister copper is purified by *
1 point
7. The substance added to the ore to remove gangue from it is called *
1 point
8. Bronze is an alloy of *
1 point
9. The most abundant metal in earth crust is *
1 point
10. Smelting is carried out in   Furnace. *
1 point
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