Question 40
Petroleum and CoalAn undesirable paraffin in the petroleum industry which is particularly prone to knocking is
- A.iso-octane
- B.n-heptane
- C.iso-heptane
- D.n-octane.
Show the answer and explanation
Answer: B (n-heptane)
Explanation
Straight-chain n-heptane knocks badly and is given an octane number of 0; iso-octane is the standard for good anti-knock fuel (100).