A) \[N{{O}_{2}}\]
B) \[S{{O}_{2}}\]
C) \[C{{O}_{2}}\]
D) \[Cl{{O}_{2}}\]
Correct Answer: C
Solution :
Key Idea A reducing agent may be defined as a substance, the oxidation number of whose atom increases. Reduction is accompanied by an increase in oxidation number of the reducing agent. Carbon belongs to IV A group. So, its maximum oxidation number is +4. In \[C{{O}_{2}}\] the oxidation number of carbon is +4 which cannot be further, increased. Hence, \[C{{O}_{2}}\]cannot act as reducing agent. While the maximum oxidation number of nitrogen, sulphur and chlorine are +5, + 6 and + 7 respectively. In \[N{{O}_{2}},C{{O}_{2}}\] and \[Cl{{O}_{2}}\] the O.N. of nitrogen, sulphur and chlorine is +4. Which can be further, increased. So, they can act as a reducing agent.
You need to login to perform this action.
You will be redirected in
3 sec
