Question

iv.
Select the appropriate options and complete the following paragraph.
(oxygen, hydrogen, reduction, oxidation, never, always, redox, decomposition)
is the process in which a substance gains or loses hydrogen
is the
process in which a substance gains or loses oxygen. The reaction in which one reactant
gets oxidised and the other reactant gets reduced is called as oxidation-reduction reaction or
reaction. Oxidation and reduction reactions occur simultaneously

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Answer 1

Answer:

1. oxidation

2. reduction

3. redox

4. always.

Explanation:

*Oxidation* is the process in which substance gains oxygen and loses hydrogen. *Reduction* is the process in which substance gains hydrogen and loses oxygen. The reaction in which one reactant gets oxidised and the other reactant gets reduced is called as oxidation-reduction reaction or *redox* reaction. Oxidation and reduction reactions *always* occur simultaneously../

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Answer 2

Oxidation is the process in which a substance gains oxygen or loses hydrogen. Reduction is the process in which a substance gains hydrogen or loses oxygen. The reaction in which one reactant gets oxidised and the other reactant or the same reactant gets reduced is called as oxidation-reduction reaction or redox reaction. Oxidation and reduction reactions always occur simultaneously.