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Question

If a diesel sample contains 75% cetane and 25% alpha-methyl naphthalene, its octane number is:

A
25
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B
75
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C
50
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D
66.6
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Solution

The correct option is B 75
If a diesel sample contains 75% cetane and 25% alpha-methyl naphthalene, its octane number is 75.
Octane number is the percentage of cetane (hexadecane) in a given diesel sample.

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