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प्रश्न
Name two metallic oxides which cannot be reduced by carbon, carbon monoxide or hydrogen.
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उत्तर
Potassium and sodium oxides cannot be reduced by carbon, carbon monoxide and hydrogen.
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संबंधित प्रश्न
Name the following:
A metal oxide that can be reduced by hydrogen.
Name oxide of one metal which is reduced by (give equation): Reduction with heat alone
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.
What is the type of bonding expected in a metallic chloride?
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.
Answer the following question with respect by hydrogen :
Explain why powdered coke is sprinkled over than electrolytic mixture.
Give the equations for the reduction of copper oxide.
Give the equation for the reduction of Iron (III) oxide.
