Question

Raman took fuel for his vehicles from two petrol pumps $A$ and $B$ and found that the fuel from pump A caused more noise than that from pump B.Choose the correct relation of octane no.

• A. Octane no(A)>Octane no(B)
• B. Octane no(B)>Octane no(A)
• C. Octane no(A)=Octane no(B)
• D. can't be predicted

Answer 1

The correct option is B Octane no(B)>Octane no(A)

Octane number $\propto$ 1/knocking tendency

So, more the octane number, lesser the knocking tendency, and hence less is the noise.