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प्रश्न
Write the chemical equation for the event.
A reaction was brought about between ferric oxide and aluminium.
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उत्तर
Aluminium is more reactive than iron. Aluminium metal replaces iron from ferric oxide to form aluminium oxide and iron
Chemical Equation: \[\ce{2Al + Fe2O3 -> Al2O3 + 2Fe}\]
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संबंधित प्रश्न
Give one example each of which illustrates the following characteristics of a chemical reaction:
evolution of a gas
What do you observe when dilute sulphuric acid is added to granulated zinc?
What do you observe when a few pieces of iron are dropped in a blue solution of copper sulphate?
Fill in the blank
When a piece of copper is added to silver nitrate solution, it turns ............in colour.
How will you obtain Silver chloride from silver nitrate.
Also give balanced equations for the reactions
How will you obtain Zinc chloride from zinc.
Also give balanced equations for the reactions
What do you observe when magnesium ribbon is burnt in oxygen?
What is meant by the metal reactivity series ? State its importance, (any two points).
Write chemical equation for the event.
Aluminium came in contact with air.
Write chemical equation for the event.
Iron filings are dropped in aqueous solution of copper sulphate.
Write chemical equation for the event.
Electrolysis of alumina is done.
With reference to Water explain with suitable examples of how the reactivity of the metals could be differentiated.
Select the correct answer for the statement given below:
A neutral oxide which does not react with an acid or a base to give salt and water.
Give a balanced equation for the following type of reaction:
A displacement reaction in which a metal above hydrogen in the reactivity series, displaces another metal from the solution of its compound.
Classify the following metals based on their reactivity.
Cu, Zn, Ca, Mg, Fe, Na, Li, Hg
| More reactive | Moderately reactive | Less reactive |
Explain the following reaction with the balanced equation.
Sulphur burns in air
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A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colour product. Identify M and black coloured product and also explain the reaction of M with oxygen.
Give the steps involved in the extraction of metals of low and medium reactivity from their respective sulphide ores.
Explain the following
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- Carbon cannot reduce the oxides of Na or Mg
- NaCl is not a conductor of electricity in solid state whereas it does conduct electricity in aqueous solution as well as in molten state
- Iron articles are galvanised.
- Metals like Na, K, Ca and Mg are never found in their free state in nature.
