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प्रश्न
Which gas is produced during the extraction of aluminium? At which electrode is this gas produced?
उत्तर
Oxygen gas is produced during the extraction of aluminium. This oxygen gas is produced at anode. During electrolysis, aluminium atoms are deposited at cathode, whereas oxide ions, being anions, get attracted to positively charged anode. These oxide ions are oxidised to oxygen gas. Oxygen gas is produced at anode.
Anode:
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संबंधित प्रश्न
Define the Ore.
Name the gas in air which tarnishes silver articles slowly.
Which one of the methods given in column I is applied for the extraction of each of the metals given in column II:
| Column I | Column II |
| Electrolytic reduction | Aluminium |
| Reduction with Carbon | Zinc |
| Reduction with Aluminium | Sodium |
| Iron | |
| Manganese | |
| Tin |
Name two metals which are always found in combined state.
Name two ores of zinc. Write the names of the chemical compounds present in them and give their chemical formulae.
Which metal is extracted from calamine ore?
Manganese metal is extracted from manganese dioxide by a reduction process by making use of:
(a) carbon
(b) hydrogen
(c) electrolysis
(d) aluminium
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Aluminium oxide is _______ oxide.
Which of the following ore is concentrated by the Froth floatation process?
