Question

A reducing chemical reaction ________.

a. reduces the compound to a simpler form b. adds an electron to the substrate

c. removes a hydrogen atom from the substrate

d. is a catabolic reaction

Short answer

A reducing chemical reaction adds an electron to the substrate. Option b is correct.

Step-by-step solution

Introduction

Oxidation is the method of addition of oxygen, reduction of hydrogen, or losing electrons from a substrate.

The reduction applies to the yield of electrons, the accumulation of hydrogen, or the reduction of oxygen from the substrate.

Explanation of incorrect options

Oxidation-reduction (redox) reactions involve the transfer of electrons between compounds.

Catabolic reactions are those reactions in which complex substances are split down into simpler units with the discharge of energy. This energy is used to manipulate chemical reactions. Catabolic reactions do not have a position in reducing reactions.

Explanation of correct option 

Reduction reactions involve the addition of electrons to a substrate and the contributor of the electrons is a reducing agent that itself brings oxidization. Hence, a reducing chemical reaction retains the addition of electrons to a substrate.

A correct answer is an option( b).