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प्रश्न
Sulphide ores : Roasting : : Carbonate ores : _______
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उत्तर
Sulphide ores : Roasting : : Carbonate ores : Calcination
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संबंधित प्रश्न
In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.
Name the method by which aluminium metal is extracted.
Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula.
Which of the following metals can be obtained from haematite ore?
Give the principles of the froth floatation process.
Give reasons, why aluminum is used in:
In making ships
Define the following term.
Gangue
Define the term:
Slag
Compare the properties of a typical metal and a non- metal on the basis of the following:
(a) electronic configuration
(b) nature of oxides
(c) oxidizing or reducing action
(d) conductivity of heat and electricity
Name the following:
The process of heating an ore to a high temperature in the presence of air.
Zinc blende is converted to oxide by ______ process.
How is the method of extraction of metals high up in the reactivity series different from that for metals in the middle? Why can the same process not be applied for them? Name the process used for the extraction of these metals.
Aluminium oxide is _______ oxide.
Extraction of moderately reactive elements is done by _______ and _______ method.
Write the molecular formulae of the following compound.
Cryolite
The poorest conductor of heat among metals is ____________.
Two ores A and B were taken. On heating ore A gives CO2 whereas, ore B gives SO2. What steps will you take to convert them into metals?
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.
