Redox Reactions — Chemistry Grade 10 · High School — Question Bank

Question 1 of 20Easy

An oxidation reaction is characterized by ...

Question 2 of 20Easy

Reduction is a reaction that ...

Question 3 of 20Easy

The oxidation number of free elements such as $Fe$ and $O X_{2}$ is ...

Question 4 of 20Easy

In compounds, the oxidation number of oxygen is generally ...

Question 5 of 20Easy

In compounds, the oxidation number of hydrogen is generally ...

Question 6 of 20Easy

The substance that undergoes oxidation is called ...

Question 7 of 20Medium

The oxidation number of S in $H X_{2} SO X_{4}$ is ...

Question 8 of 20Medium

The oxidation number of Mn in $KMnO X_{4}$ is ...

Question 9 of 20Medium

In the reaction $Fe + CuSO X_{4} FeSO X_{4} + Cu$ , the substance oxidized is ...

Question 10 of 20Medium

The sum of the oxidation numbers of all atoms in a neutral compound is ...

Question 11 of 20Medium

The oxidation number of N in the $NO X_{3} X^{-}$ ion is ...

Question 12 of 20Medium

An oxidizing agent is a substance that ...

Question 13 of 20Medium

The following reaction that is a redox reaction is ...

Question 14 of 20Medium

The oxidation number of Cr in $K X_{2} Cr X_{2} O X_{7}$ is ...

Question 15 of 20Hard

In the reaction $2 KMnO X_{4} + 16 HCl 2 KCl + 2 MnCl X_{2} + 8 H X_{2} O + 5 Cl X_{2}$ , the number of electrons gained by each Mn atom is ...

Question 16 of 20Hard

The reaction $Cl X_{2} + 2 NaOH NaCl + NaClO + H X_{2} O$ is a ... reaction.

Question 17 of 20Hard

In the reaction $MnO X_{2} + 4 HCl MnCl X_{2} + Cl X_{2} + 2 H X_{2} O$ , the substance acting as the oxidizing agent is ...

Question 18 of 20Hard

The oxidation number of Fe in $Fe X_{3} O X_{4}$ is ...

Question 19 of 20Hard

In the reaction $Zn + Cu X^{2 +} Zn X^{2 +} + Cu$ , the number of electrons transferred from Zn to $Cu X^{2 +}$ is ...

Question 20 of 20Hard

Consider the reaction $2 H X_{2} S + SO X_{2} 3 S + 2 H X_{2} O$ . The correct statement is ...