Question

1. what is the cetane rating of most diesel fuels?

a. 45 - 50
b. 20 - 30
c. 85 - 95
d. 47 - 87

Explanation:

The cetane rating of most diesel fuels is typically in the range of 45 - 55. Among the given options, option a (45 - 50) is the closest to the common range of cetane ratings for diesel fuels.

Answer:

A. 45 - 50