In oxidation 1. Hydrogen is displaced from a substance. 2. an electropositive clement is added to or proportion of electropositive element increases in a substance. Select the correct answer using the code given below :

Oxidation is classically defined as the addition of oxygen or an electronegative element to a substance, or the removal of hydrogen or an electropositive element from a substance [t1][t5]. Statement 1 is correct because oxidation involves the loss or displacement of hydrogen from a substance [c1][c3]. Statement 2 is incorrect because the addition of an electropositive element or an increase in its proportion is defined as reduction, not oxidation [t1][t6]. Conversely, oxidation involves the removal of an electropositive element [t4][t7]. Modern electronic concepts further define oxidation as the loss of electrons, which leads to an increase in the oxidation state of the element [t3][t8]. Therefore, while hydrogen displacement aligns with the definition of oxidation, the addition of electropositive elements is a characteristic of reduction processes.

Sources

1. [1] Science , class X (NCERT 2025 ed.) > Chapter 1: Chemical Reactions and Equations > What you have learnt > p. 14
2. [2] Science , class X (NCERT 2025 ed.) > Chapter 1: Chemical Reactions and Equations > CuO +H Cu+H O 2 2 → Heat (1.29) > p. 13
3. [3] https://ncert.nic.in/textbook/pdf/kech201.pdf