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प्रश्न
Write balanced equation for the following reaction:
Reduction of copper oxide by hydrogen.
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उत्तर
Reduction of Copper Oxide by hydrogen :
\[\ce{CuO + H2 + heat -> Cu + H2O}\]
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संबंधित प्रश्न
Name the following:
A metal oxide that can be reduced by hydrogen.
Give appropriate scientific reasons for Zinc oxide can be reduced to zinc metal by using
carbon, but aluminium oxide cannot be reduced by a reducing agent
Give equation for the following conversion: Aluminium to aluminium nitride.
Name a non-metallic element which is a liquid at ordinary temperatures
If fused metallic chloride is electrolyzed, at which electrode would the metal be obtained?
What metallic property is shown by the non-metal graphite?
In order to obtain one tone of aluminium, the following inputs are required:
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.
(i) Write the formula of cryolite.
(ii) Write down the word which correctly completes the following sentence.
"By dissolving aluminium oxide in cryolite, a ______ (conducting / non- conducting) solution is produced.
(iii) Why so much graphite required for this electrolytic process.
(iv) Write the equation for the reaction which takes place at cathode.
Name two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen.
Write a balanced equation for the reduction of copper (ll) oxide by hydrogen.
The following sketch represents the electroplating of an Iron cup with Nickel metal.
Study the diagram and answer the following questions:
- During electroplating, the iron cup is placed at the cathode. Why?
- Name the ion that must be present in the electrolyte.
- State one condition that is necessary to ensure that the deposit is smooth, firm and even.
- Write the reaction taking place at the cathode.
- What change would you observe at the anode?
