Asingle-displacement reaction is always a redox reaction, but a redox reaction isn't always a single-displacement reaction.

true or false

The correct answer is True.

Explanation:

Single displacement reaction is defined as the reaction in which more reactive element displaces the less reactive element from its chemical reaction. General equation for this reaction follows:

B is more reactive element than A.

Redox reaction is defined as the reaction in which oxidation and reduction reactions occur simultaneously.

Oxidation reaction is defined as the chemical reaction where a substance looses its electrons. The oxidation state of the substance gets increased and the substance gets oxidized.

Reduction reaction is defined as the chemical reaction where a substance gains electrons. The oxidation state of the substance gets reduced and the substance gets reduced.

Examples of single displacement and redox reactions:

Here, zinc is loosing 2 electrons so it is undergoing oxidation reaction and hydrogen ion is gaining 2 electrons. So, it is undergoing reduction reaction. Thus, it is considered as a redox reaction.

Here, oxidation state of carbon is increasing from -4 to +4, so it is undergoing oxidation reaction and oxidation state of oxygen is decreasing from 0 to -2, so it is undergoing reduction reaction. The above reaction is not a single displacement reaction.

From above information, it is clearly seen that all the single displacement reaction are redox reaction but reverse is not correct.

Hence, the correct answer is True.

the old alchemists made significant contributions to science even though there starting premises were off a bit. their conclusions after failure would steer them into better directions for investigation. science is no more than close observation and the initial mistakes result in rethinking and retrying experiments.