Redox Reaction : MCQ test | Mock Test

Dear students solve following MCQ based upon Redox reaction . Submit your Answers in comment section.

1.What will be the absolute oxidation number of Cl in Bleaching Powder –

        a.  0 , 0                    b 1,1     

       c. +1 & -1              d. None of these                

2. What is the oxidation number of Br in the BrO3- ion?

        a.            -1       b.  1        c.    +5        d.   -5      e.  +7

3. What kind of reaction is Cl2    à Cl- + ClO2-    (aside from unbalanced)?

     a.   An oxidation                                b.  A reduction     

     c.   A disproportionation     

    d.  An impossible reaction               e.    None of these

4. In the reaction HNO2 + I-  àNO + I2      what atoms are being oxidized and reduced, respectively?

     a.   O, I       b.   O, I         c.  I, N        d.  N, I        e. N, O

5. Oxidation number of Sulphur in H2SO5 is –

    a. 8            b.  6                c.  10         d. none

6. How many Oxygen are Peroxide in nature in CrO5 –

   a. 3              b. 2                c. 4            d. None

7. Which Will act as Only Oxidising agent –

  a. SO2          b.H2S             c. H2SO5     d. H2SO3

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