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प्रश्न
Name an alloy of copper in electrical appliances or household vessels.
उत्तर
Brass
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संबंधित प्रश्न
The most common ore of iron is ________. (Calcium / Haematite)
How does aluminum react with the Base ?
Give the name and formula of the main orea of iron and zinc ?
State a reason why zinc is used in:
galvanization,
Explain
Nitric acid can be stored in aluminium containers
From the metals: copper iron, magnesium, sodium and zinc, select a different metal in each case
which:
for not react with cold water but reacts with steam when heated.
A tapping vessel opens in a tank-like container that is tapering on the lower side. The tank has an outlet for water on the upper side and a water inlet on the lower side. Finely ground ore is released in the tank. A forceful jet of water is introduced in the tank from lower side and gangue particles and pure ore are separated by this method.
- The above description is of which gravitation separation method?
- Draw a labelled diagram of this method.
Name the process of concentration
(a) Based on densities
(b) Based on magnetic nature.
Name one metal occurring as a : Oxide ore
The following question refer to the extraction of aluminium and iron from their ores:
What is the most important chemical process in the extraction of any metal? State how this essential step is carried out in the extraction of: i. iron, and ii. Aluminium.
