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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
Complete the following by selecting the correct option from the choices given:
The metal whose oxide, which is amphoteric, is reduced to metal by carbon reduction ____________. (Fe/Mg/Pb/Al)
How is the following metallic oxide reduced? Write the equation:
Zinc oxide
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: Ferric oxide to iron.
Name oxide of one metal which is reduced by (give equation): Reduction with carbon
Name oxide of one metal which is reduced by (give equation): Electrolytic reduction
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.
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.
