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IC Engines and Nuclear Power Plants
A fuel of an octane number rating of 75 matches in knocking intensity as a mixture of
75% iso-octane and 25% normal heptane
75% normal heptane and 25% iso-octane
75% petrol and 25% diesel
75% diesel and 25% petrol
Correct Answer:
75% iso-octane and 25% normal heptane
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