Pig iron is obtained by the smelting of ______.

The main furnace used for pig iron production is ______.

Pig iron contains about ______% carbon.

Cast iron is obtained by re-melting of ______.

The carbon percentage in cast iron is generally between ______.

White cast iron is obtained when the carbon in cast iron is present as ______.

Grey cast iron is identified by the presence of ______ in its structure.

Wrought iron is produced by the process of ______.

The carbon content of wrought iron is about ______.

Wrought iron is tough, ductile and malleable because of its ______ content.

Steel is mainly an alloy of iron and ______.

The carbon content of plain carbon steel ranges from ______.

Mild steel is also known as ______.

The tensile strength of steel increases with increase in ______.

Which ferrous metal is most suitable for making ornamental gates, chains and railings?

The main reducing agent in a blast furnace is ______.

The slag formed in a blast furnace mainly consists of ______.

Cupola furnace is generally used for the production of ______.

Which of the following is the hardest form of cast iron?

The most widely used form of cast iron for machine beds is ______.

Which type of cast iron is obtained by annealing white cast iron?

Wrought iron contains slag inclusions in the form of ______.

The presence of slag fibres in wrought iron improves its ______.

Which one of the following ferrous materials is most corrosion-resistant?

Steel is produced from pig iron by reducing the percentage of ______.