Refractive index of a petrofuel which is the ratio of velocity of light in air t

Question

Refractive index of a petrofuel which is the ratio of velocity of light in air to its velocity in the petrofuel gives an indication if its

Options:

A . molecular weight

B . aromatics content

C . both a & b

D . neither a nor b

Answer: Option C
Answer: (c).both a & b

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