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प्रश्न
Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.
उत्तर
The ore of mercury is cinnabar. Cinnabar is a sulphide ore. The compound present in it is mercury (II) sulphide. Its chemical formula is HgS.
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संबंधित प्रश्न
Name the following: Main ore of aluminium.
Name two metals which are found in nature in the free state.
Explain why, carbon cannot reduce oxides of sodium or magnesium.
Define the terms gangue.
The major ore of aluminium is known as:
(a) cinnabar
(b) calamine
(c) bauxite
(d) pyrolusite
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
A sulphide ore is converted into metal oxide by the process of:
(a) carbonation
(b) roasting
(c) calcination
(d) anodising
What is galvanized iron.
How many valence electrons are present in metals ?
Explain in brief types of extraction of highly reactive metals according to their reactivity.
