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If something contains large amounts of cyclopentane and cyclohexane, what is it called? I'd like to know what is the something as well. It's a chemistry olympiad question for this year. See here, Question 3-g. Just let google translate it for you. I find some questions quite weird as well, but what can you do. Otherwise its pretty good.

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    $\begingroup$ Flammable. Is this seriously an Olympiad question? I highly doubt it has a specific name that is well accepted. $\endgroup$ – Jori Dec 25 '14 at 13:22
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    $\begingroup$ A barrel :D Merry christmas! $\endgroup$ – Klaus-Dieter Warzecha Dec 25 '14 at 15:51
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    $\begingroup$ Which Olympiad was this in? National or international. I don't recall the question $\endgroup$ – bon Dec 25 '14 at 16:01
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    $\begingroup$ Yes, this years house round of Chemistry Olympiade. iuventa.sk/files/documents/2_olympiady/cho/… Question 3-g. Just let google translate it for you. I find some questions quite weird as well, but what can you do. Otherwise its pretty good. $\endgroup$ – user11441 Dec 25 '14 at 16:58
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The most likely name would be naphthenes. It could also be called cycloalkanes.

Added:
Since the reference to the question is about the coal and oil production, the answer would be naphthenes. When the coal and oil were distilled, a layer (called naphthene) was removed which was found to contain mainly cyclopentane and cyclohexane.

I would complete the statement as:
If a fraction of distillate contains large amounts of cyclopentane and cyclohexane, it is called naphthene.

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  • $\begingroup$ The answer should be much more concrete than this I assume. I need to replace the word something as well as figure out what it is. $\endgroup$ – user11441 Dec 25 '14 at 17:00
  • $\begingroup$ Thanks for the answer man, I have a nice teacher so I can consult it with her without a problem. Fortunately enough, in the next rounds inspecific questions such as this one dont occur, they are more practical. $\endgroup$ – user11441 Dec 26 '14 at 17:27
  • $\begingroup$ Also I suppose for better specification, I think it would be better like this: If a fraction of distillate from oil and coil contains large amounts of cyclopentane and cyclohexane, it is called naphthene. Surely not all fractions of distillates are called napthenes, right? $\endgroup$ – user11441 Dec 26 '14 at 17:31

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