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प्रश्न
Fill in the following blank with suitable word:
The rocky material found with ores is called.............
उत्तर
The rocky material found with ores is called gangue.
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संबंधित प्रश्न
Name the following: Main ore of aluminium.
In the extraction of aluminium: Draw the diagram for the extraction of aluminium.
Manganese metal is extracted from manganese dioxide by a reduction process by making use of:
(a) carbon
(b) hydrogen
(c) electrolysis
(d) aluminium
A sulphide ore is converted into metal oxide by the process of:
(a) carbonation
(b) roasting
(c) calcination
(d) anodising
Give reasons, why aluminum is used in:
making alloys
Name the ore of mercury. With the help of balanced chemical equations, explain the process of extraction of mercury from its ore.
Which method of refining is used to get 99.8% pure aluminium?
Which one of the following is not true of metal :
Metals form non-polar covalent compounds
Aluminium oxide is _______ oxide.
During extraction of metals, electolytic refining is used to obtain pure metals.
(a) Which material will be used as anode and cathode for refining of silver metal by this process?
(b) Suggest a suitable electrolyte also.
(c) In this electrolytic cell, where do we get pure silver after passing electric current?
