The most abundant metal in the earth crust is-

Correct option is C

The correct answer is (c) Aluminium.
· Aluminium is the most abundant metal in the Earth's crust, making up about 8.23% by weight.
· It is found mainly in the form of bauxite ore, from which it is extracted.
· Aluminium is a lightweight, silvery-white metal used extensively in various industries, including transportation, packaging, and construction.
· The high abundance of aluminium is due to its presence in numerous minerals, making it widely available for extraction and use.
Information Booster:
Sodium:
· Sodium is a highly reactive metal and is not found in its free form in nature. It is most commonly found in compounds such as sodium chloride (table salt).
Calcium:
· Calcium is the fifth most abundant element in the Earth's crust and is found in various minerals, including limestone (calcium carbonate).
Iron:
· Iron is the fourth most abundant element in the Earth's crust and is primarily found in minerals such as hematite and magnetite. It is the most widely used metal in construction and manufacturing.