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Questions
Write the chemical formulae of the main ore of aluminium.
Give the chemical names and formulae of the main ores of aluminium.
Write the chemical formulae of one main ore of aluminium.
Solution
| Name | Chemical name | Formula |
| Bauxite | Hydrated aluminium oxide | \[\ce{Al2O3.2H2O}\] |
| Cryolite | Sodium aluminium hexafluoride | \[\ce{Na3AlF6}\] |
RELATED QUESTIONS
Choose the correct answer from the options given below:
The main ore used for the extraction of iron is
A. Haematite
B. Calamine
C. Bauxite
D. Cryolite
State the position of aluminium in the periodic table.
State the use of:
wrought Iron
Name the following:
The chief metal which occur in nature in free state as well as in combined state.
Complete and balance the following equation :
Al + NaOH →
The following question refer to the extraction of aluminium and iron from their ores :
Name the principle ore from which i. iron, and ii. Aluminium is extracted.
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 |
This is not an alloy of copper:
choose the most appropriate term to match the given description.
Crushing of the ore into a fine powder
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?
