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Redox Reactions...

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  • Question 1
    1 / -0

    In which of the following compounds, Fe has the lowest oxidation number?

  • Question 2
    1 / -0

    The value of $$n$$ in the reaction is:

    $$Cr_{2}O_{7}^{2-}+14H^{+}+nFe^{2+}\rightarrow 2Cr^{3+}+nFe^{3+}+7H_{2}O$$

  • Question 3
    1 / -0

    Oxidation number of oxygen in ozone $$\left( \mathrm { O } _ { 3 } \right)$$ is:

  • Question 4
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    Oxidation number of oxygen in $$NaO_{ 3 }, { KO }_{ 2 }$$ respectively are:

  • Question 5
    1 / -0

    Which of the following statement is correct?

  • Question 6
    1 / -0

    What is the molar concentration of the triiodide solution, $$KI_3$$(aq), if 30.00 mL of the solution is required to completely react with 25.00 mL of a $$0.200\ mol/L$$, thiosulphate solution, $$K_2S_2O_3$$(aq) ?
    The chemical equation for the reaction is:
    $$2S_2O_3^{2-}(aq) + I_3^-(aq)\rightarrow S_4O_6^{2-} (aq)+3 I^-(aq)$$

  • Question 7
    1 / -0

    Oxidation number of nitrogen in $$ (NH_4)_2SO_4 $$ is

  • Question 8
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    Which of the following is a redox reaction?

  • Question 9
    1 / -0

    The atomic number of an element is 22. The highest oxidation state exhibited by it in its compounds is 

  • Question 10
    1 / -0

    Acidified potassium dichromate is treated with hydrogen sulphide. In the reaction, the oxidation number of chromium 

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