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प्रश्न
To protect iron from rusting, it is coated with a thin layer of zinc. Name the process.
उत्तर
Galvanization
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संबंधित प्रश्न
What is the difference between a mineral and an ore?
Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.
The metal which can be extracted simply by heating the cinnabar ore in air is:
(a) Zn
(b) Cu
(c) Al
(d) Hg
Complete the incomplete statement with missing word:
Metals form positive ions while non- metals ______.
Which one of the following is not true of metal :
Metals are good conductors of electricity.
Define calcination.
Usually ______ ores are subjected to ______ which is done in the absence of air.
Explain the following reaction with the balanced equation.
Chlorine dissolved in water
Give the reaction involved during extraction of zinc from its ore by
- roasting of zinc ore
- calcination of zinc ore
A mineral from which the metal can be extracted economically and conveniently is known as ______.
