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प्रश्न
Give reason for the following:
Aluminium is extracted from its oxide by electrolytic reduction and not by convectional reducing agents.
उत्तर
Aluminium has a great affinity for oxygen, so a reducing agent does not reduce it. Therefore, it is extracted from its oxide by electrolytic reduction.
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संबंधित प्रश्न
Give appropriate scientific reasons for Electrolysis is of molten lead bromide is considered to be a redox reaction.
Write the equation taking place at the anode
Define the following term:
Electrolysis
Give reason for the following:
Lead bromide undergoes electrolytic dissociation in the molten state but is a non-electrolyte in the solid state.
Write down the word or phrase from the bracket that will correctly fill in the blank in the following sentence:
Pure water consists entirely of ________________ (ions/ molecules).
Choose the correct answer from the option given below:
Which one is weak electrolyte?
Give one example of a substance which contain :
Ions only
Give one example of a substance which contain :
molecules only
Copy and complete the following sentence :
With platinum electrodes, hydrogen is liberated at the ______and oxygen at the _________ during the electrolysis of acidified water.
Element X is a metal with a valency 2. Element Y is a non-metal with a valency 3.
If the compound formed between X and Y is melted and an electric current passed through the molten compound, the element X will be obtained at the ______ and Y at the ______ of the electrolytic cell. (Provide the missing words).
