Question

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Answer 1

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● Definition of the terms :-

★ Oxidation : Oxidation is the process of adding oxygen to a substance (in terms of oxygen transfer) / Oxidation is the process of removal of hydrogen from a substance (in terms of hydrogen transfer).

★ Reduction : Reduction is the process of removal of oxygen from a substance (in terms of oxygen transfer) / Reduction is the process of adding hydrogen to a substance (in terms of hydrogen transfer).

★ Oxidising agent : A substance which helps in the oxidation of another substance is called an oxidising agent (applicable to both cases - adding of oxygen & removal of hydrogen).

★ Reduction agent : A substance which helps in the reduction of another substance is called a reduction agent (applicable to both cases - removal of oxygen & adding of hydrogen).

● Reaction 1 :-

➪ Substance oxidised : $\bold{H_2}$

➪ Substance reduced : $\bold{CuO}$

➪ Oxidising agent : $\bold{CuO}$

➪ Reducing agent : $\bold{H_2}$

● Reaction 2 :-

➪ Substance oxidised : $\bold{H_2S}$

➪ Substance reduced : $\bold{Cl_2}$

➪ Oxidising agent : $\bold{Cl_2}$

➪ Reducing agent : $\bold{H_2S}$

● Reaction 3 :-

➪ Substance oxidised : $\bold{C}$

➪ Substance reduced : $\bold{MgO}$

➪ Oxidising agent : $\bold{MgO}$

➪ Reducing agent : $\bold{C}$