Q.

To assign knock rating of fuels for SI engines the fuels are considered as

A. alpha methyl napthelene and iso-octane
B. 2,2,4 trimethyl pentane and n-heptane
C. alpha- methyl napthelene and n-heptane
D. none of the above
Answer» B. 2,2,4 trimethyl pentane and n-heptane
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