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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
What chemical process is used for obtaining a metal from its oxide?
Name the following:
The property possessed by metals by which they can be beaten into sheets.
In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.
Why does a new aluminium vessel lose shine so soon after use?
Define the term mineral.
Explain why, an aqueous solution of sodium chloride is not used for the electrolytic extraction of sodium metal.
Name two metals which are always found in combined state.
Give the name of one ore of iron. Which iron compound is present in this ore? Write its chemical formula.
Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.
How is copper extracted from its sulphide ore (copper glance), Cu2S? Explain with equations of the reactions involved.
Which of the following metals can be obtained from haematite ore?
(a) copper
(b) sodium
(c) zinc
(d) iron
Calamine ore can be converted into zinc oxide by the process of:
(a) dehydration
(b) roasting
(c) calcination
(d) sulphonation
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.
(a) Name the metal X.
(b) Name the metal oxide XO2.
(c) Which reducing agent can be used to reduce XO2 to obtain metal X?
(d) Name another metal which can also be extracted by the reduction of its oxide with the above reducing agent.
State three objectives achieved during the roasting of ores.
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
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
Explain in brief types of extraction of less reactive metals according to their reactivity.
Oxides of moderately reactive metals like Zinc, Iron, Nickel, Tin, Copper, etc. are reduced by using:
Which of the following metals exist in their native state in nature?
- Cu
- Au
- Zn
- Ag
