Redox Reactions MCQ Multiple Choice Questions Answers | Quiz for Practice
Dive into the dynamic world of redox reactions with our comprehensive collection of multiple-choice questions and answers! Explore the principles, types, and applications of oxidation-reduction reactions in chemistry, from corrosion to electrochemistry. Whether you're a chemistry student, an engineer, or simply curious about the chemical processes driving our world, our Redox Reactions MCQs page offers an engaging and educational experience. Test your knowledge, deepen your understanding, and unravel the mysteries of redox chemistry through our carefully crafted quizzes. Visit ObjectiveQuiz.com now to embark on a journey through the electrifying realm of redox reactions!
Redox Reactions MCQ Questions for Practice
1. The colorless solution of silver nitrate slowly turns brown on adding copper chips to it because of
Correct Answer is: Oxidation of Cu atoms
2. The oxidation process involves
Correct Answer is: Increase in oxidation number
3. The oxidation number of Mn is maximum in
Correct Answer is: KMnO4
4. KMnO4 reacts with oxalic acid according to the equation 2MnO4- + 5C2O42- + 16H+ -> 2Mn2+ +10CO2 + 8H2O , Here 20 mL of 0.1 M KMnO4 is equivalent to
Correct Answer is: 50 mL of 0.1 M C2H2O4
5. Which of the following reactions does not involve either oxidation or reduction?
Correct Answer is: CrO2-4 -> Cr2O72-
6. The number of moles of KMnO4 reduced by one mole of KI in alkaline medium is
Correct Answer is: Two
7. Which of the following processes does not involve oxidation of iron?
Correct Answer is: Formation of Fe (CO)5 from Fe.
8. The oxidation state of Cr in Cr (CO)6 is
Correct Answer is: Please check the page for the answer.
9. Which of the following processes does not involve either oxidation or reduction?
Correct Answer is: Formation of slaked lime from quick lime
10. The oxidation number of Cl in Cl2O7 is
Correct Answer is: +7
11. A metal ion M3+ loses 3 electrons, its oxidation number will be
Correct Answer is: 6
12. The oxidation number of Sulphur in Na2S4O6 is
Correct Answer is: 2.5
13. In oxygen di fluoride the oxidation number of oxygen is
Correct Answer is: 2
14. Which of the following is a redox reaction?
Correct Answer is: Zn + 2AgCN -> 2Ag + Zn (CN)2
15. Which reaction is not feasible?
Correct Answer is: 2KBr + I2 -> 2KI + Br2
16. The oxidation number of an element in a compound is evaluated on the basis of certain rules. Which of the following rules is not correct in this respect?
Correct Answer is: The oxidation number of hydrogen is always +1.
17. The largest oxidation number exhibited by an element depends on its outer electronic configuration. With which of the following outer electronic configurations the element will exhibit largest oxidation number?
Correct Answer is: 3d54s2
18. Which of the following elements does not show disproportionation tendency?
Correct Answer is: F
19. What is known as Autooxidation?
Correct Answer is: Formation of H2O2 by the oxidation of H2O
20. The tendency of an electrode to lose electrons is known as
Correct Answer is: Oxidation Potential
21. What is n-factor?
Correct Answer is: Equal to Number of moles of electrons Lost or gained by one mole of reductant or oxidant
22. Oxidation numbers of P in PO43-, of S in SO42- and that of Cr in Cr2O72- are respectively
Correct Answer is: +5, +6 and +6
23. Oxidation state of Fe in Fe3O4 is
Correct Answer is: 8/3
24. The oxide, which cannot act as a reducing agent is
Correct Answer is: CO2
25. For the feasibility of redox reaction in a cell, the e.m.f. should be
Correct Answer is: Positive
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Multiple Choice Questions and Answers on Redox Reactions
Redox Reactions Multiple Choice Questions and Answers
