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प्रश्न
Complete and balance the following equation:
Al + O2 →
उत्तर
4Al + 3O2 → 2Al2O3(s)
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संबंधित प्रश्न
How does the painting of an iron object prevent rusting?
Name an ore which is concentrated by:
magnetic separation
State on what special properties the use of each of these metals depends:
zinc
State the use of:
cast iron
Explain the term of Ores .
Complete and balance the following equation:
Al + N2 →
Give the name and formula of an ore of zinc.
Reduction of the zinc compound which is the product of above reaction.
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 |
Name the following :
An ore of zinc containing its sulphide.
The common method of the extraction of metal from the oxide ore is:-
