In which row is the air pollutant not correctly matched with its source? air pollutant
Source
A
carbon monoxide
B
incomplete combustion of fuels
burning petrol in cars
decomposing vegetation
burning coal and other fossil fuels
lead compounds
nitrogen oxides
sulfur dioxide
С
D

b

Explanation:

the equation that correctly represent the reaction for formation of ammonia is

n2+ 3h2 → 2nh3 (answer d)

1 mole of nitrogen gas (n2) react with 3 moles of hydrogen gas (h2) to form 2 moles of ammonia ( nh3). this is in a process known as haber process were iron is used as a catalyst and reaction take place that a higher temperature and pressure. the process is exothermic hence energy is released.