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प्रश्न
Which metal can be extracted from the following ore?
Haematite
उत्तर
Iron
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संबंधित प्रश्न
Calamine ore can be used to extract one of the following metals. This metal is:
(a) copper
(b) mercury
(c) aluminium
(d) zinc
Identify the process given in following passage and draw neat labelled diagram showing the process.
Electrolysis of molten mixture of alumina (melting point > 20000C) is done in a steel tank. The tank has a graphite lining on the inner side. This lining does the work of a cathode. A set of graphite rods dipped in the molten electrolyte works as anode. Cryolite (Na3AlF6) and fluorspar (CaF2) are added in the mixture to lower its melting point upto 10000C.
Define the term : Slag
Correct the following statement :
Copper reacts with nitric acid to produce nitrogen dioxide.
Which one of the following is not true of metal :
Metals form non-polar covalent compounds
The electrolysis of alumina involves the use of fluorspar and cryolite to increase the melting point.
Identify who I am!
Ore of Aluminum- ______
Explain the reactions of nonmetals with water with the help of examples.
Explain the following reaction with the balanced equation.
Ferric oxide is reacted with aluminium.
An alloy is
