Question

According to the calssical concept, which of the following cannot be termed as reduction?

• A. Removal of electropositive element
• B. Addition of Hydrogen
• C. Removal of Oxygen
• D. Removal of electronegative element.

Answer 1

The correct option is A Removal of electropositive element

The phenomenon which are termed as reduction according to the classical concept are:
Addition of Hydrogen
Removal of Oxygen
Gain of electropositive element (like Silver)
Removal of an electronegative element (like Fluorine)

Electronic concept of reduction :

Addition or gain of electrons is termed as reduction.
$C{u}^{2+}+2e^{-}⟶Cu\left(s\right)$
Here $C{u}^{2+}$ is reduced to $Cu$ when it loses $2e^{-}$