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प्रश्न
Calcium, copper, lead, aluminium, zinc, chromium, magnesium, iron.
Choose the major metals from the list given above to make the following alloys:
(a) Stainless steel
(b) brass
उत्तर
(a) For stainless steel: iron, chromium
(b) For brass: Copper and zinc.
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संबंधित प्रश्न
The major ore of aluminium is known as:
(a) cinnabar
(b) calamine
(c) bauxite
(d) pyrolusite
Which of the following metals can be obtained from haematite ore?
(a) copper
(b) sodium
(c) zinc
(d) iron
Give the principles of the froth floatation process.
Name the following:
The substance added to get rid of gangue in the extraction of metal.
Answer the following question :
What is the difference between calcination and roasting.
Define calcination.
Mercury, silver, gold are highly reactive metals.
Write the molecular formulae of the following compound.
Cryolite
Explain the following reaction with the balanced equation.
Dry aluminium hydroxide is ignited at 1000 °C
The highly reactive metals like Sodium, Potassium, Magnesium, etc. are extracted by the ____________.
