Directions: Five statements are given below, which are jumbled in any random order. These statements will form a coherent and meaningful paragraph, when arranged in the correct sequence.

Arrange the sentences in the right order and answer the questions that follow. A well-known material, steel is essentially an alloy of iron and carbon.

A. Other than carbon, manganese, nickel, chromium, tungsten, silicon and other alloying elements are added to steel.

B. Pure iron is too soft and ductile for many industrial applications such as making tools, machines, structures, railway lines, automobiles and others, and therefore necessary to harden and strengthen it.

C. This enhances the characteristics such as tensile strength, hardness, abrasion resistance, corrosion resistance and high temperature resistance of the plain carbon steel.

D. Carbon exercises the most powerful influence on the mechanical properties of steel after heat treatment.

E. This is best done by adding carbon, the atoms being of small size, become part of the space lattice of iron, thus forming a solid solution.