Question

Which of the following is not an application of redox reactions?

• A. Heating of $\ce{Fe_2O_3}$ with coke in a blast furnace
• B. Oxidation of glucose in our body
• C. Burning of fuels
• D. Decomposition of lime stone

Answer 1

Answer: (D)

Decomposition of lime stone

Answer 2

{\overset{\text{+2 }}{ { Ca}}$$\overset{\text{+4 }}{ {C }}$O _3 ->[\Delta]$\overset{\text{ +2}}{ { Ca}}$O +$\overset{\text{ +4}}{ { C}}O_2}, no change in oxidation number of Ca and C.