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Science TNSB Mentoring
Class 10
Periodic classification of elements
Introduction to metallurgy
7.
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 oer 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 oxygen 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.
2.
Slag is the substance added to the ore to decrease the fusion temperature and remove the impurities.
Flux is the substance added to the ore to decrease the fusion temperature and remove the impurities.
Slag is the substance added to the ore to increase the fusion temperature and remove the impurities.
Gangue is the substance added to the ore to decrease the fusion temperature and remove the impurities.
Matrix is the substance added to the ore to decrease the fusion temperature and remove the impurities.
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