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प्रश्न
Identify who I am!
Ore of Aluminum- ______
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उत्तर
Ore of Aluminum- Bauxite
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संबंधित प्रश्न
A zinc ore gave CO2 on treatment with a dilute acid. Identify the ore and write its chemical formula.
Bronze is an alloy of copper and ______.
The rocky material found with ores is called ______.
Explain giving one example, how highly reactive metals (which are high up in the reactivity series) are extracted.
Describe with one example, how moderately reactive metals (which are in the middle of reactivity series) are extracted.
How are the less reactive metals (which are quite low in the reactivity series) extracted? Explain with the help of an example.
Describe the extraction of zinc metal from its sulphide ore (zinc blende). Write equations of the reactions involved.
A black metal oxide XO2 is used as a catalyst in the preparation of oxygen gas from potassium chlorate. The oxide XO2 is also used in ordinary dry cells. The metal oxide XO2 cannot be reduced satisfactorily with carbon to form metal X.
- Name the metal X.
- Name the metal oxide XO2.
- Which reducing agent can be used to reduce XO2 to obtain metal X?
- Name another metal which can also be extracted by the reduction of its oxide with the above reducing agent.
Which metal can be extracted from the following ore?
Haematite
Name the following:
Name two metals always find in combined state.
Compare the process of calcination and roasting.
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction which takes place at the cathode.
To protect iron from rusting, it is coated with a thin layer of zinc. Name the 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.
Extraction of moderately reactive elements is done by _______ and _______ method.
Write the name.
Metals which are amphoteric in nature.
Write the molecular formulae of the following compound.
Sodium aluminate
Explain in brief types of extraction of highly reactive metals according to their reactivity.
Explain in brief types of extraction of less reactive metals according to their reactivity.
