Question:-
Assertion (A) : Octane number is used for rating of fuels in spark ignition engine.
Reason (R) : Octane number of a fuel is defined as percentage by volume, of isooctane in a mixture of iso-octane and a- methyl naphthalene.
Option (A)
Both A and R are individually true and R is the correct explanation of A
Option (B)
Both A and R are individually true but R is not the correct explanation of A
Option(C)
A is true but R is false
Option(D)
A is false but R is true
Correct Option:
(C)
Question Solution:
Primary reference fuel isooctane and n heptanes
question-answer-faq-9187