Reference fuels for knock rating of SI engine fuels would include:

1.	Reference fuels for knock rating of SI engine fuels would include:
A.	Iso-octane and alpha-methyl naphthalene.
B.	Normal octane and aniline
C.	Iso-octane and n-hexane
D.	n-heptane and is-octane
Answer» E.

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Reference fuels for knock rating of SI engine fuels would include:

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