Directions : In the following question more than one of the answers given may be correct. Select the correct answer and mark it according to the code:
The oxidation reactions are (1) \[S{{n}^{2+}}\xrightarrow[{}]{{}}S{{n}^{4+}}\] (2)\[F{{e}^{3+}}\xrightarrow[{}]{{}}F{{e}^{2+}}\] (3) \[{{F}^{-}}\xrightarrow[{}]{{}}F\] (4)\[P{{b}^{2+}}\xrightarrow[{}]{{}}Pb\]A) 1, 2 and 3 are correct
B) 1 and 2 are correct
C) 2 and 4 are correct
D) 1 and 3 are correct
Correct Answer: D
Solution :
Oxidation is a process which liberates electrons. \[S{{n}^{2+}}\xrightarrow[{}]{{}}S{{n}^{4+}}+2{{e}^{-}}\] (oxidation) \[F{{e}^{3+}}+{{e}^{-}}\xrightarrow[{}]{{}}F{{e}^{2+}}\] (reduction) \[{{F}^{-}}\xrightarrow[{}]{{}}F+{{e}^{-}}\] (oxidation) \[P{{b}^{2+}}+2{{e}^{-}}\xrightarrow[{}]{{}}Pb\] (reduction)
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