| 11. | Oxidation is a reaction in which |
A. electrons are lost | |
B. oxygen combines | |
C. There is an increase in the proportion of electropositive groups | |
D. All of the above |
| 12. | Reduction is a reaction in which |
A. electrons are lost | |
B. oxygen combines | |
C. There is an increase in the proportion of electronegative groups | |
D. electrons are captured |
| 13. | The tendency to lose electrons is called |
A. oxidation | |
B. degradation | |
C. triggering | |
D. motivation |
| 14. | The tendency to accept electrons is called |
A. oxidation | |
B. degradation | |
C. triggering | |
D. motivation |
| 15. | The process of combining with electropositive elements is called |
A. oxidation | |
B. degradation | |
C. combustion | |
D. Bhanjan |
| 16. | The process of combining with electronegative elements is called |
A. oxidation | |
B. degradation | |
C. triggering | |
D. motivation |
| 17. | Electronegative element group ratio in oxidation reaction |
A. there is a shortage | |
B. increases | |
C. neither decrease nor increase | |
D. none of these |
| 18. | Oxidation is the process in which the valency of an element is |
A. decreases | |
B. increases | |
C. remains unchanged | |
D. none of these |
| 19. | in oxidation-reduction reaction |
A. the core electrons of the atom participate | |
B. The valence electrons of an atom take part | |
C. Atoms in the first orbit of an atom participate | |
D. the nucleus of an atom takes part |
| 20. | oxidation-reduction in a reaction |
A. are different | |
B. happen together | |
C. first oxidation then reduction | |
D. first reduction then oxidation |