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प्रश्न
Name the following:
A metal oxide that can be reduced by hydrogen.
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उत्तर
PbO or CuO
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संबंधित प्रश्न
Write a balanced chemical equation for each of the following reactions :
(i) Reduction of copper (II) oxide by hydrogen
Give equation for the following conversion:Aluminium to sodium aluminate.
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
Name a non-metallic element which is a conductor of electricity.
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 the following:
The compound formed by the reaction between calcium oxide and silica.
Steel is an alloy of iron and ______.
Write a balanced equation for the reduction of copper (ll) oxide by hydrogen.
Give the equations for the reduction of copper oxide.
