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प्रश्न
Explain the following term:
Metallurgy
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उत्तर
The process of extracting pure metals from their ores, followed by further purification using various processes. Metallurgy refers to the entire process.
संबंधित प्रश्न
Give the importance of the following for living beings:
Hydrogen
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is more reactive metal.
Identify A and B and give their reactions with dil HCL and dil H2SO4 ?
Metal A has an electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2 which is a more reactive metal.
Give the effect of heat on their: nitrates
Name:
(a) the processes involved in
concentration :-
Name:
(b) two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen
Explain the following term:
Gangue
Explain the following terms:
(c) slag
Explain the following terms:
smelting
`MnO_2 + 4Al` 
…………….
`2Cu_2O +Cu_2S`
......................
Distinguish between electrolytic methods of reduction and refining.
Which metal is used for:
lithographic plates for printing
Name a metal which forms a liquid alloy at ordinary temperature.
Explain with reason:
Why is powdered coke sprinkled on top of the electrolyte?
A compound that is added to lower the fusion temperature of the electrolytic bath in the extraction of aluminium.
Name the following:
Name an allotrope of a non-metal that allows electricity to pass through it.
Write scientific reason.
Magnetic separation method is used to separate the magnetic ingredients in the ores.
Explain concept with example/explain with the help of a balanced equation.
Gangue
State the reason for the addition of caustic alkali to bauxite ore during the purification of bauxite.
