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प्रश्न
Name oxide of one metal which is reduced by (give equation): Reduction with heat alone
उत्तर
Mercury
\[\ce{ 2HgO ->[Heat] 2Hg + O2}\]
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संबंधित प्रश्न
How is the following metallic oxide reduced? Write equations:
Iron (ll) oxide
Give reason for the following:
Carbon anodes are used in the electrolytic extraction of aluminium.
what is the function of cryolite in the extraction of aluminium, other than acting as a solvent for bauxite?
Name a non-metallic element which forms acidic and neutral oxides
With reference to the reduction of copper (II) oxide , iron (II) oxide, lead (II) oxide and magnesium oxide; place the oxides in order of increasing ease of reduction.[i.e. first write the oxide that is most difficult to reduce and at last, the oxide, that is most easily reduced.]
Write balanced equation for the following reaction:
Reduction of iron (III) oxide by carbon monoxide.
If fused metallic chloride is electrolyzed, at which electrode would the metal be obtained?
Write the observation for the following:
A paper dipped in potassium permanganate solution is put on the mouth of a test tube containing sulphur dioxide gas.
- A to F below relate to the source and extraction of either zinc or aluminium:
- Bauxite
- Coke
- Cryolite
- Froth floatation
- Sodium hydroxide solution
- Zinc blende
- Write down the three letters each from the above list which are relevant to
- Zinc
- Aluminium
- Fill in the blanks using the most appropriate words from A to F.
- The ore from which aluminium is extracted must first be treated with ………………. so that pure aluminium oxide can be obtained.
- Pure aluminium oxide is dissolved in ….. to make a conducting solution.
iii. Write the formula of cryolite.
Give the equation for the reduction of Zinc oxide.
