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प्रश्न
Write the name.
The process of extraction of aluminium from alumina-
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उत्तर
The process of extraction of aluminium from alumina- Electrolytic reduction
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संबंधित प्रश्न
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
Describe with one example, how moderately reactive metals (which are in the middle of reactivity series) are extracted.
What is meant by the ‘concentration of ore’?
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
Which of the following is an ore of mercury metal?
Manganese metal is extracted from manganese dioxide by a reduction process by making use of ______.
Give the chemical formula of :
Sodium aluminate
Complete the incomplete statement with missing word:
Metals are malleable while non-metals are ______.
Answer the following question :
What is the difference between calcination and roasting.
Zinc blende is converted to oxide by ______ process.
Observe the given figure of reactivity series of metals and answer the following questions:
Reactivity series of metals
- Name two metals which react with water.
- Name two moderately reactive metals.
- Name the most highly reactive metal and the most less reactive metal.
Extraction of moderately reactive elements is done by _______ and _______ method.
In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining
In the electrolytic reduction of alumina, the lining of graphite acts as an anode.
Iqbal treated a lustrous, divalent element M with sodium hydroxide. He observed the formation of bubbles in reaction mixture. He made the same observations when this element was treated with hydrochloric acid. Suggest how can he identify the produced gas. Write chemical equations for both the reactions.
Why should the metal sulphides and carbonates be converted to metal oxides in the process of extraction of metal from them?
The given reaction shows one of the processes to extract the metals like Iron and Manganese.
\[\ce{MnO2(s) + Al(s) -> Mn(l) + Al2O3(s) + Heat}\]
Give a reason why Aluminium is preferably used in thermite reactions.
A mineral from which the metal can be extracted economically and conveniently is known as ______.
