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प्रश्न
Name two metals which are found in nature mainly in the free state (as metallic elements).
उत्तर
Gold (Au) and silver (Ag) are found in nature in free state. This is because they are non-reactive metals.
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संबंधित प्रश्न
The process by which sulphide ore is concentrated.
Give the chemical formula of :
Bauxite
Define the term : Slag
Compare the process of calcination and roasting.
What is galvanized iron.
What is passive iron?
To protect iron from rusting, it is coated with a thin layer of zinc. Name the process.
Name the process used for the enrichment of sulphide ore.
The poorest conductor of heat among metals is ____________.
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Give the reason why the above reaction is known as a thermite reaction.
