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प्रश्न
Define the term : Ore
उत्तर
Ore: Those minerals from which a metal can be extracted profitably are called ores.
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संबंधित प्रश्न
What is rust? Give the equation for the formation of rust ?
Explain with reason:
Electrolytic reduction is done to obtain aluminium?
How does aluminum react with the Acid ?
State on what special properties the use of each of these metals depends:
zinc
State the use of:
wrought Iron
Give composition and uses of the following alloys. Mention the reason for its use.
Duralumin
Give the name and formula of an ore of zinc.:
Roasting of the ore
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 |
Write the chemical formulae of the main ore of aluminium.
Name the processes involved in dressing of the ores.
