Question

In the manufacture of steel, ________ is used to make steel strong.
(A) Aluminum
(B) Manganese
(C) Iron
(D) All of these

Answer 1

Hint: Manganese eliminates oxygen and sulfur when iron mineral (an iron and oxygen compound) is changed over into iron. It likewise is a basic compound that assists convert with pressing into steel. As an amalgam, it diminishes the fragility of steel and gives strength.

Complete answer:
Steelmaking is the way toward creating steel from iron minerals and additionally scrap. In steelmaking, pollutions, for example, nitrogen, silicon, phosphorus, sulfur, and overabundance carbon (most significant contamination) are eliminated from the sourced iron, and alloying components, for example, manganese, nickel, chromium, carbon, and vanadium are added to deliver various evaluations of steel. Restricting disintegrated gases, for example, nitrogen and oxygen and entrained contaminations (named "incorporations") in the steel is additionally critical to guarantee the nature of the items cast from the fluid steel. Steelmaking has existed for centuries, yet it was not marketed for a huge scope until the late fourteenth century. An old cycle of steelmaking was the pot cycle. During the 1850s and 1860s, the Bessemer cycle and the Siemens-Martin measure transformed steelmaking into a hefty industry. Today there are two significant business measures for making steel, to be specific fundamental oxygen steelmaking, which has fluid pig-iron from the impact heater and scrap steel as the principle feed materials, and electric bend heater (EAF) steelmaking, which uses scrap steel or direct decreased iron (DRI) as the primary feed materials.
Therefore, the correct answer is option ‘B’.

Note: It isn't anything but difficult to decide whether the steel has gone through the solidifying and hardening measure by essentially taking a gander at it, yet there is a dependable and basic test. To analyze a bit of steel, acquire a hand record, and document an edge of the chose metal.