At the high temperature in an internal combustion engine,a fraction of the nitrogen in air is converted to
A)carbon monoxide.
B)sulfur dioxide.
C)argon.
D)nitrogen oxides.

Question

Quizplus · Accepted Answer

At high temperatures in an internal combustion engine, nitrogen and oxygen combine to form nitrogen oxides (NOx). This is because the high temperature and pressure conditions in the engine cause the nitrogen and oxygen molecules in the air to split and recombine into new compounds. Nitrogen oxides are a pollutant and can contribute to smog, acid rain, and respiratory problems.

At the High Temperature in an Internal Combustion Engine,a Fraction