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You can create printable tests and worksheets from these Grade 12 Oxidation-Reduction Reactions questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

A substance that gains electron(s) is
1. an oxidizing agent
2. a reducing agent
3. a substance that oxidizes
4. reductant
The oxidation number of Cl in $KClO_3$ is
1. $-1$
2. $-5$
3. $+1$
4. $+5$
The oxidation number of H in $AlH_3$ is
1. $+1$
2. $-1$
3. $+3$
4. $0$
The oxidation number of I in HOI is
1. $-1$
2. $0$
3. $-2$
4. $+1$
The oxidation number of oxygen in an $O_2^[2-]$ ion is
1. $-2$
2. $+1$
3. $-1$
4. $+2$
A substance that goes to a higher oxidation number is
1. an oxidising agent
2. a substance that reduces
3. a reducing agent
4. oxidant
The oxidation number of P is +3 in which of the following compounds?
1. $H_3PO_2$
2. $H_3PO_3$
3. $H_3PO_4$
4. $H_4P_2O_7$
What is the oxidation state of Oxygen (O) in $OF_2$?
1. $+4$
2. $+2$
3. $-1$
4. $-2$
The sum of oxidation states of all atoms in $ClO_4^[-1]$ ion is
2. $-4$
3. $-1$
4. $+2$