Hydrocarbons Question 293
Question: A fuel contains 25 % n-heptane and 75 % iso-octane. Its octane number is [MP PMT 1993; MP PET 1994]
Options:
A) 50
B) 75
C) 100
D) 25
Show Answer
Answer:
Correct Answer: B
Solution:
Octane number is the percentage by volume of iso-octane in the mixture of iso-octane and n-heptane which has the same antiknocking properties as the fuel under examination.
Given fuel (25% n-heptane +75% iso-octane) Hence, octane number = 75 (because iso octane is 75%)
BETA
