HELP ME IN SCiENCE PLS

Question

You are asked to deduce the molecular size of two liquid alkane compounds, A and B. Once ignited, compound A produces a smokier flame than compound B. Which of these two alkanes have a larger molecular size?

Answer 1

A would likely have a larger molecular size. This is based on the idea that combustion is less complete as the size of the hydrocarbon (alkane in this case) increases and this results in a smokier flame.