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प्रश्न
Which metal can be extracted from the following ore?
Haematite
उत्तर
Iron
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संबंधित प्रश्न
Why are the metals like Na, K, Ca and Mg never found in their free state in nature?
Name the method by which aluminium metal is extracted.
Name the gas evolved when cinnabar ore is roasted.
Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.
The major ore of aluminium is known as:
(a) cinnabar
(b) calamine
(c) bauxite
(d) pyrolusite
A sulphide ore is converted into metal oxide by the process of:
(a) carbonation
(b) roasting
(c) calcination
(d) anodising
State why aluminium is extracted from its oxide by electrolysis while copper, lead, iron by reducing agents and mercury and silver by thermal decomposition.
Define calcination.
Explain the following reaction with the balanced equation.
Ferric oxide is reacted with aluminium.
Which of the following metals exist in their native state in nature?
- Cu
- Au
- Zn
- Ag
