Question

Manganese is called ferro-alloy because_______
A. It is not smelt with any other mineral
B. It is used in the production of aluminium
C. It is smelted with iron ore to get steel
D. It is used in chemical industry

Answer 1

Hint:
Ferroalloys are delivered by and large by two techniques: in an impact heater or in an electric curve heater. Impact heater/blast furnace creation persistently diminished during the twentieth century, while the electric bend creation is as yet expanding.

Complete answer:
Ferroalloy alludes to different compounds of iron with a high extent of at least one different components, for example, manganese (Mn), aluminum (Al), or silicon (Si). They are utilized in the preparation of steel and alloys.The composites bestow particular characteristics to steel and project iron or serve significant capacities during creation and are, hence, firmly connected with the iron and steel industry, the main purchaser of ferroalloys. The main makers of ferroalloys in 2014 were China, South Africa, India, Russia and Kazakhstan, which represented 84% of the world production. World creation of ferroalloys was assessed as 52.8 million tons in 2015.

Today, ferromanganese can be still proficiently created in an impact heater/blast furnace, in any case, even for this situation, electric curve heaters are spreading. All the more generally, ferroalloys are delivered via carbothermic responses, including decrease of oxides with carbon (as coke) within the sight of iron. Some ferroalloys are delivered by the expansion of components into liquid iron.

It is additionally conceivable to create some ferroalloys by direct reduction [fr] reaction. For instance, the Krupp-Renn process [fr] is utilized in Japan to deliver ferronickel.

Hence, the correct answer is option C.

Note:
 Manganese eliminates oxygen and sulfur when iron metal (an iron and oxygen compound) is changed over into iron. It additionally is a basic amalgam that assists convert with pressing into steel. As a composite it diminishes the weakness of steel and confers strength. Manganese is utilized likewise as a combination with metals, for example, aluminum and copper.