Advertisements
Advertisements
प्रश्न
Name the following:
The middle region of the blast furnace.
उत्तर
Zone of heat absorption
APPEARS IN
संबंधित प्रश्न
Aluminium is a more active metal than iron, but suffers less corrosion. Why?
For graphite, explain its significance in the extraction of aluminium.
What is the role of cryolite (NaAlF6) in the electrolytic reduction of alumina in the Hall's process?
A to F below relate to the source and extraction of either zinc or aluminium.
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
Fill in the blanks using the most appropriate words from A to F:
(i) The ore from which aluminium is extracted must be treated with ______ so that pure aluminium oxide can be obtained.
(ii) Pure aluminium oxide is dissolved in ______ to make a conducting solution.
The following question relate to the extraction of aluminium by electrolysis.
Explain why is it necessary to renew the anode periodically.
Name the solution used to react with bauxite as a first step in obtaining pure aluminium oxide, in the Baeyer's process.
Write the equation for the reaction where the aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide.
Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
Name the alloy used for the following purpose.
Aircraft
The compound that is not a constituent of the electrolytic mixture used in Hall-Heroult's process is ______.
