Question

Oxidation is a process which involves:
(a) Addition of oxygen
(b) Removal of hydrogen
(c) Loss of electrons
(d) All of the above.

Answer 1

Hint: For this question, we have to know the definition of the oxidation process and how the oxidation occurs, like what happens with the reaction constituents when the oxidation process occurs.

Complete step-by-step answer:
We start with the different definition of the oxidation:
Oxidation: The process of any atom, molecule or ion of oxidising or being oxidised.
Now, discussing the different definition of the oxidation in different terms:
Oxidation (in terms of adding or removing an atom):
The reaction in which there is addition of an oxygen molecule (any electronegative element) or removal of a hydrogen molecule (any electropositive molecule) is called oxidation.
Oxidation (in terms of gain or loss of an electron):
The reaction in which the molecule, atom or any ion loses an electron is called oxidation reaction.
Oxidation (in terms of changing the oxidation state):
The reaction in which there is an increase in the oxidation state is called oxidation reaction.
Now, moving towards the option,
In the first option, from the above discussion, we can say that Oxidation is a process which involves Addition of oxygen. Hence, this option is correct.
In the second option, from above discussion, we can say that Oxidation is a process which involves Removal of hydrogen. Hence, this option is also correct.
In the third option, from above discussion, we can say that Oxidation is a process which involves Loss of electrons. Hence, this option is also correct.
In the last option, all the above options are correct which is true.

Hence, the correct option of these questions is (d) All of the above.

Note: Reduction is different from the oxidation, like the reaction in which there is addition of a hydrogen molecule (any electropositive element) or removal of an oxygen molecule (any electronegative molecule) is called reduction whereas the reaction in which there is addition of an oxygen molecule (any electronegative element) or removal of a hydrogen molecule (any electropositive molecule) is called oxidation.