Chemistry Practice Test – Oxidation and Reduction (Questions with Answers and Explanations)

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Chemistry Practice Test – Oxidation and Reduction (Questions with Answers and Explanations)

Hello and Welcome to Chemistry Practice Test - Oxidation and Reduction

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2Na2O2(s) + 2H2O(l) → 4NaOH(s) + O2(g)

The substance that is oxidized in the reaction above is _____ (JAMB 2012)

A. 2Na2O2(s)  B.  NaOH(s)   C. H2O(l)   D. O2(g)


Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)

In the reaction above, the oxidizing agent is _____ (JAMB 2013)

A. Cu(s)   B. Zn(s)   C. CuSO4(aq)  D. ZnSO4(aq)


The oxidation number of boron in NaBH4 is _______ (JAMB 2012)

A. -3   B. -1   C. +1   D. +3


2H2O(l) + 2F2(g) → 4HF(aq) + O2(g)

In the reaction above, the substance that is being reduced is ____ (JAMB 2013)

A. F2(g)   B. HF(aq)   C. O3(g)   D. H2O(l)


During the preparation of ethene, it is passed through which of the following to remove impurities? (JAMB 2022)

A. NaHCO3
B. NaOH
C. K2CO3
D. Water

 

 

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