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प्रश्न
Give the equations for the reduction of copper oxide.
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उत्तर
\[\ce{CuO + C ->[\Delta]Cu + CO}\]
\[\ce{CuO + CO ->[\Delta]Cu + CO2}\]
\[\ce{CuO + H2 ->[\Delta]Cu + H2O}\]
संबंधित प्रश्न
Give equation for the following conversion: Aluminium hydroxide to aluminium oxide.
Give equation for the following conversion: Aluminium to aluminium nitride.
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
Name a non-metallic element which has a metallic lustre
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
What is the type of bonding expected in a metallic chloride?
If fused metallic chloride is electrolyzed, at which electrode would the metal be obtained?
4 tones of bauxite, 150 Kg of sodium hydroxide and 600 Kg of graphite.
The aluminium compound in bauxite is aluminium oxide and the main impurity is iron (II) oxide. Aluminium is obtained by the electrolysis of aluminium oxide dissolved in cryolite.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?
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.
