Question

Which of the following metal is used as
construction material?
(1) Cast iron
(ii) Rubber
(iii) Glass
(iv) Plastic
​

Answer 1

Answer:

cast iron is used as construction material

Answer 2

(i) Cast iron is used as a construction material.

Explanation:

• Cast iron is an alloy of iron and carbon, with small amount of silicon and manganese.
• It has a high tensile strength, it is really hard, and has high castability.
• Due to these reasons it is used in making a number of items and is used as a construction material.
• It is used in making sanitary fittings, column base, and metal columns.
• It is also used in making lamp posts, metal staircases, and gates.
• Therefore, option (i) Cast iron is correct.