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प्रश्न
Name the following :
A compound added to lower the fusion temperature of electrolytic bath in the extracton of aluminium.
उत्तर
Cryolite is added to lower the fusion temperature of an electrolytic bath in the extraction of aluminium.
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संबंधित प्रश्न
Name the following: A compound added to lower the fusion temperature of electrolytic bath in the extraction of aluminum
Name the process by which the refining of aluminium is done ?
For sodium hydroxide, explain its significance in the extraction of aluminium.
In order to obtain 1 tonne of aluminium, the following inputs are required: 4 tonnes of bauxite, 150 kg of sodium hydroxide and 600 kg of graphite. The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (III) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
- Write the formula of cryolite.
- Write down the word which correctly completes the following sentence.
By dissolving aluminium oxide in cryolite, a ______ (conducting/non-conducting) solution is produced. - Why is so much graphite required for the electrolytic process?
- Write the equation for the reaction which takes place at the cathode.
- What is cathode made up of?
Give reason for the following:
Extraction of aluminium was very difficult in the beginning.
Name the following:
The middle region of the blast furnace.
Answer the following question :
Name a metal which is found abundantly in earth's crust.
The following question relate to the extraction of aluminium by electrolysis.
Give the equation for the reaction that takes place at the cathode
The following question relate to the extraction of aluminium by electrolysis.
Explain why is it necessary to renew the anode periodically.
Write the balanced chemical equation to show the concentration of ore in Baeyer’s process.
Sodium aluminate to aluminium hydroxide
