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प्रश्न
Explain the following:
In construction work, why is the alloy of aluminium-duralumin used rather than pure aluminium?
उत्तर
In construction work, the alloy of aluminium-duralumin is used rather than pure aluminium because of the following reasons:
- Duralumin is light and strong, but aluminium is light and not strong.
- Duralumin is unaffected by moist air, while aluminium is affected by moist air.
- Duralumin is corrosion-resistant, while aluminium can undergo corrosion.
- Duralumin has a high tensile strength, while aluminium has a low one.
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संबंधित प्रश्न
For the substance given below, describe the role played in the extraction of aluminium.
Cryolite
Explain why In the electrolysis of alumina using the Hall Heroult's Process the electrolyte is covered with powdered coke
Name the following:
The substance added along with aluminium in the Hall-Heroult's process.
In the Hall's process for extraction of aluminium, Give the formula and purpose of fluorspar and cryolite
Answer the following question :
Name a metal which is found abundantly in earth's crust.
Name the following :
A compound added to lower the fusion temperature of electrolytic bath in the extracton of aluminium.
Describe the role played in the extraction of aluminum : Graphite
Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.
Name a metal which is found abundantly in the Earth's crust.
In Hall and Heroult's process, products liberated at anode and cathode are ______
