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प्रश्न
Write the name.
The molecular formula of main ore of aluminium -
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उत्तर
Al2O3 · nH2O
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संबंधित प्रश्न
Describe with one example, how moderately reactive metals (which are in the middle of reactivity series) are extracted.
Which metal is extracted from cinnabar ore?
Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula.
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
Which metal is extracted from calamine ore?
An ore of manganese metal is ______.
Calamine ore can be used to extract one of the following metals. This metal is:
Give reasons, why aluminum is used in:
wrapping chocolates
Give reasons, why aluminum is used in:
painting electric and telegraphic poles
Give reasons, why aluminum is used in:
In aluminiothermy
What is passive iron?
Complete the incomplete statement with missing words:
Metals are ______ while non-metals are ______ conductors of heat.
State the property of the metal being utilized in the following :
| Use of metal | Property |
| Zinc in Galvanization | |
| Aluminium in Thermite welding |
Which one of the following is not true of metal :
Metals form non-polar covalent compounds
_______ is the least reactive metal.
Zinc sulphide : Roasting : : zinc carbonate : _______
Identify who I am!
Ore of Aluminum- ______
Read the following passage and answer the questions.
According to the reactivity series, zinc is more reactive than iron, iron is more reactive than silver. During study of this, a student dipped the iron nails in silver nitrate solution.
- What is reactivity series?
- What will happen when iron nails are dipped in silver nitrate solution?
- Which type of reaction happens when iron metal reacts with silver nitrate solution?
- What will happen if a zinc rod is used instead of iron nail?
Which of the following ore is concentrated by the Froth floatation process?
2 mL each of concentrated HCl, HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be
