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First year chemistry students at the University of York were given a bit of a surprise when this Breaking Bad-themed question appeared in their January exams.

The start of the question reads: "In the TV show Breaking Bad, the main character Walter White synthesises methamphetamine 3 according to the synthetic scheme shown below.".

The exam questions underneath, spotted by student newspaper York Vision, ask students to demonstrate their understanding of how methamphetamine is made- the drug made and sold by Walter White in the TV show.

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Lets hope the students were all paying attention in series one- or attending their lectures.

The question was set by York Chemistry lecturer Professor David Smith, who said on Twitter:

"I'm particularly proud of the 'Breaking Bad' exam question I set our 1st years this year."

Professor Smith later tweeted:

“Obviously any students scoring full marks on my exam question will be reported to the DEA.” (The US Drug Enforcement Administration)

Professor Smith also has a Youtube, where he uploads entertaining chemistry videos, including this interesting one about the chemistry behind Breaking Bad.