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How is the following metallic oxide reduced? Write the equation: Zinc oxide

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प्रश्न

How is the following metallic oxide reduced? Write the equation:

Zinc oxide

संक्षेप में उत्तर
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उत्तर

It is reduced by a carbon reduction process using a suitable reducing agent, carbon (C).

ZnO and Coke are heated in retort by producer gas (CO + N2) to get zinc spelter.

\[\ce{ZnO(s) + C(s) ->[1400^\circ C] \underset{(Zinc spelter)}{Zn(s)} + CO(g)}\]

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अध्याय 7: Metallurgy - EXERCISE-7B [पृष्ठ १२९]

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एस पी सिंग Concise Chemistry [English] Class 10 ICSE
अध्याय 7 Metallurgy
EXERCISE-7B | Q 9. (b) | पृष्ठ १२९

संबंधित प्रश्न

Name the compound added to pure alumina to lower the fusion temperature during the electrolytic reduction of alumina.


Give reason for the following:
Carbon anodes are used in the electrolytic extraction of aluminium.


Give equation for the following conversion:Aluminium to sodium aluminate.


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.


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.
(a) When bauxite is treated with sodium hydroxide solution, what happens to:
(i) the aluminium oxide?
(ii) The iron (III) oxide?

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 : Identify the components of the electrolyte other than pure alumina and the role played by each.


Give the equation for the reduction of Iron (III) oxide.


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