Question

Free radicals are formed through
A. Oxidation
B. Reduction
C. Hydrolysis
D. Synthesis

Answer 1

Hint : Any molecular entity capable of independent existence that has an unpaired electron in an atomic orbital is referred to as a free radical. The existence of an unpaired electron causes most radicals to have certain features in common. Many radicals are highly reactive and unstable. They act as oxidants or reductants depending on whether they donate or absorb an electron from other molecules.

Complete Step By Step Answer:
Let us first learn about all of the varieties of reactions stated above before arriving to a conclusion and selecting the best option.
Oxidation: When two molecules are introduced to each other, one of them loses an electron. Oxidation is the name for this process. Electrons are dispersed. The hydrogen group is removed.
Reduction: When two molecules are introduced to each other, one of them gains an electron. This is referred to as a reduction reaction. There is an increase in the number of electrons in the system. The hydrogen group is added. Oxygen is taken away.
Hydrolysis: The act of separating compounds by adding water is known as hydrolysis. Water reacts with another chemical substance to produce two or more compounds.
Synthesis: A synthesis reaction is one in which several reactants come together to generate a single product. Synthesis reactions are exothermic because they emit energy in the form of heat and light.
When oxygen molecules split into single atoms with unpaired electrons, unstable free radicals emerge, looking for other atoms or molecules to connect with. If this continues, a condition known as oxidative stress develops.
So, the correct option is: A. Oxidation.

Note :
Many chronic health problems, such as cardiovascular and inflammatory disease, cataracts, and cancer, are linked to free radical damage. Antioxidants protect tissue from free radical damage by inhibiting radical production, scavenging radicals, or encouraging their breakdown.