Cetane___________________?

Cetane___________________?

A. has zero cetane number
B. has 100 cetane number
C. helps detonation
D. is a straight chain paraffin
E. determines the efficiency of an I.C. engine

Iso-oct ,ne________________?

Iso-oct ,ne________________?

A. has octane number of 0
B. has octane number of 50
C. has octane number of 100
D. is an index of detonation quality
E. is an index of knocking quality