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प्रश्न
Which of the following metals can be obtained from haematite ore?
(a) copper
(b) sodium
(c) zinc
(d) iron
उत्तर
(d) Iron
Iron can be obtained from hematite ore. Hematite ore contains the compound iron (III) oxide (Fe2O3).
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संबंधित प्रश्न
Name the following:
The property possessed by metals by which they can be beaten into sheets.
The process by which sulphide ore is concentrated.
Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.
Name one ore of mercury. Which mercury compound is present in this ore? Write its chemical formula.
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.
X is an element in the form of a powder. X burns in oxygen and the product is soluble in water. The solution is tested with litmus. Write down only the word which will correctly complete each of the following sentences:
(a) If X is a metal, then the litmus will turn ______.
(b) If X is a non-metal, then the litmus will turn ______.
(c) If X is a reactive metal, then ______ will be evolved, when X reacts with dilute sulphuric acid.
(d) If X is a non -metal, it will form _ oxide, which will form ______ solution with water.
(e) If X is a non -metal, it will not conduct electricity unless it is carbon in the form of ______.
Name the methods by which concentrated ore is converted to metallic oxide.
Explain the following reaction with the balanced equation.
Zinc sulphide is heated strongly in excess of air
Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
