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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
In the extraction of aluminium: Name the process of concentration of bauxite.
How many carats is pure gold? Why is pure gold not suitable for making ornaments?
Give two uses of bronze.
Explain why, carbon cannot reduce oxides of sodium or magnesium.
Name one metal which is extracted by:
Electrolytic reduction.
Name the gas produced when calamine ore is calcined.
Which of the following pair of metals exists in their native state in nature?
During galvanisation, iron metal is given a thin coating of one of the following metals. This metal is:
Which of the following metals are extracted by the electrolysis of their molten chlorides?
State one observation for each of the following :
Copper sulphate solution is electrolysed using copper electrodes.
Give the chemical formula of :
Cryolite
Answer the following questions based on the extraction of aluminium from alumina by Hall - Heroult’s Process :
Why is powdered coke sprinkled on top of the electrolyte?
Compare the process of calcination and roasting.
Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron.
Choose the major metals from the list given above to make the following alloys:
(a) Stainless steel
(b) brass
Name the following:
A compound which is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Explain concept with example/explain with the help of a balanced equation.
Ionic bond and ionic compounds
Observe the figure and answer the following.
- Write the name of the method.
- What is used as anode and cathode in this method?
- Write the molecular formula and use of cryolite.
- Write anode reaction.
- Write cathode reaction.
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
The process in which a carbonate ore is heated strongly in the absence of air to convert it into metal oxide is called ____________.
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 the reason why the above reaction is known as a thermite reaction.
