because of the high prensence
Iron
The base of the pillar is tied to its foundations by small pieces of iron. It rises to a height of 7.20 m, with 93 cm buried below the present floor level
The Earth's core is primarily made up of two metals: iron and nickel. Iron is the most abundant metal in the core, while nickel is also present in significant amounts.
asoka
CHANDRAGUPTA
7î7
The Iron Pillar in Delhi, India is made of wrought iron, not rock. It is known for its high corrosion resistance due to the composition of the iron used and the weathering process it underwent.
This is not pure iron but a special steel.
Effect of acid rain on Iron Pillar of Qutub Minar is- When acid rain falls on the Iron Pillar the colour of Iron Pillar changes from red to black. Other factors like pollution and dust are also responsible. The government should take some strict actions on this issue.
Metals that contain iron are called ferrous metals. Examples include steel, cast iron, and wrought iron.
Metals like zinc, copper, iron, manganese, and molybdenum are often present in components of fertilizers as micronutrients. These metals are essential for plant growth and are required in small quantities. Other metals like lead, cadmium, and mercury can also be present in fertilizers as impurities, and their presence should be carefully monitored to prevent potential contamination of soil and water sources.
The Ashoka pillar, made of wrought iron, remains rust-free due to the absence of impurities like sulfur and phosphorous in the iron, and the protective layer of iron oxide that forms on its surface, preventing further corrosion. Additionally, the pillar's composition and environmental conditions at the site of its installation help in its preservation.