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प्रश्न
Give composition and uses of the following alloys. Mention the reason for its use.
Brass
उत्तर
| Alloys | Composition | Uses |
| Brass | Cu = 55 to 95% Zn = 5 to 45% |
|
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संबंधित प्रश्न
Also give the names of their repective ores ?
How is the main ore of aluminium concentrated?
Name an ore which is concentrated by:
magnetic separation
State the use of:
hard steel
Identify the pairs of metals and their ores from the following.
| Group A | Group B |
| a. Bauxite | i. Mercury |
| b. Cassiterite | ii. Aluminium |
| c. Cinnabar | iii. Tin |
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.
The two main metals in bronze are
Metal sheets : Malleable : : Electric wires : _______
The common method of the extraction of metal from the oxide ore is:-
Draw diagram of magnetic separation process and answer the questions based on it.
- Give example in which this process can work.
- Suggest any two methods that can also be used for this purpose.
- Which technique is based on hydrophobic and hydrophilic properties of particles?
