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Science Test Space
Class 10
Periodic Classifications of elements
Introduction to Metallurgy
5.
Metallurgical terminology
Question:
4
m.
Spot the error and choose the correct statements:
1.
An iron is a mineral that can be readily and economically extracted on a large scale.
An ore is a mineral that can be readily and economically extracted on a large scale.
An oxygen is a mineral that can be readily and economically extracted on a large scale.
An air is a mineral that can be readily and economically extracted on a large scale.
An ore is a mineral that can be readily and economically extracted on a small scale.
2.
Mining is the process of decreasing the roasted metallic oxide from the molten metal.
Mining is the process of increasing the roasted metallic oxide from the molten metal.
Smelting is the process of decreasing the roasted metallic oxide from the molten metal.
Miming is the process of decreasing the roasted metallic oxide from the molten metal.
Smelting is the process of inecreasing the roasted metallic oxide from the molten metal.
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