A) 110
B) 90
C) 100
D) zero
Correct Answer: C
Solution :
The quality of diesel fuel is expressed in terms of cetane number. Cetane number of a sample of diesel is the percentage of cetane by volume in a mixture of cetane and \[\alpha \]-methylnaphthalene which has the same ignition properties as the diesel under examination in a test engine. Cetane (n-hexadecane) ignites rapidly and is given a cetane number of 100, whereas \[\alpha \]-methyl-naphthalene ignites slowly and is given a cetane number of zero. \[\underset{\begin{smallmatrix} cetane\text{ }\left( n-hexadecane \right) \\ cetane\text{ }no.\text{ }=\,\,100 \end{smallmatrix}}{\mathop{C{{H}_{3}}-{{(C{{H}_{2}})}_{14}}-C{{H}_{3}}}}\,\] \[\alpha \]-methyl naphthalene cetane no. = 0You need to login to perform this action.
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