Question

The non-metal present in the alloy stainless steel is:
A) $P$
B) $C$
C) $S$
D) $Cl$

Answer 1

Hint: We know that steel is an alloy of mainly iron and a nonmetal. This non-metal helps to improve the strength of raw iron as well as increase its resistance to fracture. The non-metal belongs to the \[14th\] group of the periodic table and exhibits tetravalency as well as catenation.

Complete answer:
Stainless steel is a group of iron-based alloys that contain a minimum percentage of \[11\] of chromium. This prevents the alloy from rusting as well gives it heat-resisting properties. Along with that, different types of steel include non-metal carbon. The composition of carbon varies from \[0.03%\] to greater than \[1%\] as well. Elements like nitrogen, aluminium, silicon, sulphur, selenium, and molybdenum are also added in minute traces.
From the above explanation, we can conclude that the non-metallic component used in the formation of stainless steel is carbon. The element fits the explanation provided in the hint. Carbon belongs to the \[14th\] group of the periodic table. It shows excellent catenation property along with its tetravalency which is a distinguishing feature of the group \[14\] elements.
In addition to iron, carbon, and chromium, modern stainless steel may also contain other elements, such as nickel, niobium, molybdenum, and titanium. Nickel, molybdenum, niobium, and chromium enhance the corrosion resistance of stainless steel.

Therefore, the correct answer is option (B).

Note:
Remember that the resistance of stainless steel towards corrosion can be increased in the following ways: - Increasing the chromium content above the present \[11%.\] Addition of about \[8%\] of nickel metal. Addition of molybdenum to the existing alloy. It is important to know that the addition of molybdenum improves the steel's resistance to pitting corrosion as well.