MCQ on Auto Oxidation and Disproportionation: Chemistry is considered to be the most scoring subject in NEET JEE Exam. As it is one of the easiest scoring subjects, it is often ignored and undermined a subject. But if you want to get an edge over others, here is a tip, master NEET/JEE Chemistry concepts. Chemistry demands the attention of students in understanding reactions and concrete basic understanding but once done it only gets easier from there. Mastering NCERT syllabus for NEET/JEE Chemistry should be topping your list of to-do for chemistry.

In this post we are providing you MCQ on Auto Oxidation and Disproportionation, which will be beneficial for you in upcoming NEET, JEE, Medical and Engineering Exams.

MCQ on Auto Oxidation and Disproportionation

Q1. Disproportionation means ______.
a) only reduction of a reactant
b) only oxidation of a reactant
c) both oxidation and reduction of a reactant
d) neither oxidation nor reduction of a reactant

Q2. Oxidation numbers of chlorine in Cl₂O, Cl₂ and ClO₃^– are ______.
a) +1, -1, +5
b) +1, 0, -1
c) -1, 0, +1
d) +1, 0, +5

Q3. The decomposition of KClO₃ to KCl and O₂ on heating is an example of _______.
a) intermolecular redox change
b) intramolecular redox change
c) disproportionation or auto redox change
d) none of these

Q4. Which of the following has been arranged in order of decreasing average oxidation number of sulphur?
a) H₂S₂O₇ > Na₂S₄O₆ > Na₂S₂O₃ > S₈
b) H₂SO₅ > H₂SO₃ > SCl₂ > H₂S
c) H₂SO₄ > SO₂ > H₂S > H₂S₂O₈
d) SO₂⁺ > SO₄^2- > SO₃^2- > HSO₄^–

Q5. Which one of the following will not reduce an acidified solution of potassium dichromate (VI)?
a) Zn
b) FeSO₄
c) (CH₃)₂C(OH)CH₃
d) CH₃CH₂CH(OH)CH₃

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By Team Learning Mantras