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प्रश्न
Complete flow chart given below.
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उत्तर
संबंधित प्रश्न
Name two metals which are found in nature in the free state.
Name one metal which is extracted by:
Reduction with heat alone.
Bronze is an alloy of copper and ______.
What iron compound is present in haematite ore? Also write its chemical formula.
Explain how, mercury is extracted from its sulphide ore (cinnabar). Give equations of the reactions involved.
Which metal is extracted from calamine ore?
Manganese metal is extracted from manganese dioxide by a reduction process by making use of ______.
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
What is the function of cryolite used along with alumina as the electrolyte?
Name the following:
The process in which an ore is heated in air so that oxygen gets added to it to form the oxides.
Define the term:
Flux
What is galvanized iron.
Name the following:
The process of heating an ore to a high temperature in the presence of air.
Name the following:
A steel grey coloured solid non-metal.
Name the methods by which concentrated ore is converted to metallic oxide.
Zinc blende is converted to oxide by ______ process.
Carbon cannot reduce the oxides of sodium, magnesium, and aluminum to their respective metals. Why? Where are these metals placed in the reactivity series? How are these metals obtained from their ores? Take an example to explain the process of extraction along with chemical equations.
In Electrolytic reduction of alumina, Anode : _______ : : Cathode : Graphite lining
Explain the following reaction with the balanced equation.
Zinc carbonate is heated strongly in limited supply of air
Which of the following metals exist in their native state in nature?
- Cu
- Au
- Zn
- Ag
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.
