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प्रश्न
Which metal can be extracted from the following ore?
bauxite
उत्तर
Aluminium
APPEARS IN
संबंधित प्रश्न
M is a metal above hydrogen in the activity series and its oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context, answer the following:
1) What kind of combination exists between M and O?
2)How many electrons are there in the outermost shell of M?
3) Name the group to which M belongs.
4) State the reaction taking place at the cathode.
5) Name the product at the anode.
Name a reducing agent that may be used to obtain manganese from manganese dioxide.
Name the gas in air which tarnishes silver articles slowly.
The two metals which can be extracted just by heating their sulphides in air are:
(a) sodium and copper
(b) copper and aluminium
(c) potassium and zinc
(d) mercury and copper
Define the following term.
Gangue
Define the term : Flux
Complete the incomplete statement with missing word:
Non-metals form acidic oxides while metals form ______.
What is the difference between calcination and roasting?
Answer the following question:
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.
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
