Respiration is considered as exothermic reaction because energy is released in this process. Glucose combines with oxygen present in our cells to form carbon dioxide and water along with energy.
surfactant, also called surface-active agent, substance such as a detergent that, when added to a liquid, reduces its surface tension, thereby increasing its spreading and wetting properties.
In the dyeing of textiles, surfactants help the dye penetrate the fabric evenly.
They are used to disperse aqueous suspensions of insoluble dyes and perfumes.
