1. Tardigrade
  2. Question
  3. Chemistry
  4. The statements which refer to 'oxidation' are i. Addition of oxygen ii. Addition of electropositive element iii. Removal of oxygen iv. Removal of hydrogen v. Addition of electronegative element vi. Loss of electrons vii. Oxidation number of the element decreases

Q. The statements which refer to 'oxidation' are
i. Addition of oxygen
ii. Addition of electropositive element
iii. Removal of oxygen iv. Removal of hydrogen
v. Addition of electronegative element
vi. Loss of electrons
vii. Oxidation number of the element decreases

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Answer: 4

Solution:

Statements i, iv, v and vi represent oxidation.