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Practice **questions on February 1, 2017; replies will earn 2–6 points (** no scoring after it is displayed, thank you for your replies)

2017-02-01View Original

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This post was last edited by percy on 2017-2-3 at 12:58. True or False: The basic nitrogen compounds in petroleum and its fractions mainly belong to the pyridine series, quinoline series, isoquinoline series, and acridine series. The number of rings increases as the boiling point of the fraction rises. **:Correct

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