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प्रश्न
Name the constituents of Brass.
उत्तर
The constituents of Brass are 60–70% Cu and 40–30% Zn.
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संबंधित प्रश्न
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.
When bauxite is treated with sodium hydroxide solution, what happens to:
- the aluminium oxide,
- the iron (III) oxide?
Give reason for the following:
Extraction of aluminium was very difficult in the beginning.
In the Hall's process for extraction of aluminium, Sate the location of cathode and anode and explain what occurs at each electrode.
Aluminium is a more active metal than iron, but suffers less corrosion. Why?
Name the following:
The middle region of the blast furnace.
During the concentration of bauxite ore, aluminium goes in ______ part because of its ______ nature.
Name the following:
A metal which is always present in the amalgam.
Name the alloy used for the following purpose.
Making electric circuits
Name the alloy used for the following purpose.
Making medals
Write the balanced chemical equation to show the concentration of ore in Baeyer’s process.
Sodium aluminate to aluminium hydroxide
