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November 01, 2025, 01:14:24 pm
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Author Topic: Year 11 Chem MCQ  (Read 926 times)  Share 

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Samira

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Year 11 Chem MCQ
« on: May 12, 2009, 11:21:35 pm »
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Which of the following pairs of moelcules could be obtained from the fractional distillation of crude oil?
(a) CH4 & C3H8
(b) H2 & CH4
(c) C2H4 & C6H6
(d) C2H2 & C2H4
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Dark Horse

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Re: Year 11 Chem MCQ
« Reply #1 on: May 13, 2009, 07:14:32 pm »
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A
Alkanes are obtained from fractional distillation. Alkenes and Hydrogen gas are only produced in a later stage known as cracking.
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TrueTears

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Re: Year 11 Chem MCQ
« Reply #2 on: May 13, 2009, 07:50:33 pm »
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Cracking does happen during the fractional distillation process, either as thermal or catalytic.
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