In this equation, stands for carbon, stands for nitrogen, and stands for oxygen. which equation represents this reaction?
a.) 2co + 2no → 2cn2 + o2
b.) co + no → 2co2 + 2n2
c.)2co2 + 2no → co2 + n2
d.)2co + 2no → 2co2 + n2
e.)2co + 2no → 2cn2 + o2

So, grey is for carbon, red is for oxygen and blue is for nitrogen.
From the color code and the equation shown in the picture, choices A and E are excluded because the output in these equations is oxygen gas not nitrogen gas.

Again from the picture we find that:
The inputs are: 2 carbon dioxide and 2 nitrogen oxide (2CO2 + 2NO)
The outputs are: 2 carbon dioxide and 1 nitrogen molecule (2CO2 + N2)

Combining the inputs and outputs, the following equation is formed:
2CO2 + 2NO > 2CO2 + N2

Comparing the formed equation with the choices, we find that the correct choice is D

What are the options? i can you if you give them.