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प्रश्न
Write a balanced chemical equation for each of the following reactions :
(i) Reduction of copper (II) oxide by hydrogen
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उत्तर
Balance equation:
CuO + H2 → Cu + H2O
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संबंधित प्रश्न
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
How is the following metallic oxide reduced? Write the equation:
Zinc oxide
Give equation for the following conversion: Ferric oxide to iron.
Give equation for the following conversion: Aluminium hydroxide to aluminium oxide.
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.
Write balanced equation for the following reaction:
Reduction of lead (II) oxide by carbon.
Give the equation for the reduction of Iron (III) oxide.
Give the equation for the reduction of Zinc oxide.
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?
