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प्रश्न
Name an alloy of zinc which is used in simple voltaic cells.
उत्तर
Zinc amalgam.
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संबंधित प्रश्न
State the main components of the following alloys:
Bronze
What is galvanization? How does it protect iron from rusting?
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 following:
The chief metal present in magnalium and duralumin
Write the name and formula of two ores of the following: Aluminium
Give the name and formula of an ore of zinc.
Reduction of the zinc compound which is the product of above reaction.
What is an alloy? An alloy usually has some property which makes it useful in a specific way.
What is the special property of: Duralumin
List 1 contains the meta ls I alloys (1, 2, 3, 4, 5 ) and list 2 contains their uses (A, B, C, D, E).
| List 1 Metal/Alloy |
List 2 Uses |
| 1. Aluminium | A. Steel making |
| 2. Lead | B. aeroplane wings |
| 3. Brass | C. galvanizing |
| 4. Iron | D. radiation shield |
| 5. Zinc | E. electricaI fittings |
Copy and complete the following table, write down the correct letter against the numbers representing metals. An answer may be used only once. The first has been done for you.
| Metal | 1 | 2 | 3 | 4 | 5 |
| Use | B |
State the main components of the following alloy:
Brass
Name the processes involved in dressing of the ores.
