Set - I	Set - II
A) Removal of electrons	1) Oxidizing agents
B) Addition of electrons	2) Oxidation
C) Non – metals	3) Reduction
D) Metals	4) Reducing agents

Loss of electrons or removal of electrons from atom of elements is known as oxidation.

Addition of electrons to an atom of element is known as reduction.

Oxidizing agent means the substance which oxidizes others and itself gets reduced. Ex: Non metals

like F, Cl, S etc…

Due to high electro negativity, non metals act as oxidizing agents. Reducing agent means the

substance which reduces others and itself gets oxidized. Ex: Metals like Na, K, Ca , and Fe etc…

Due to high electro positivity metals act as reducing agents.