Posted by Steve Simon on February 23, 2015, 7:43 am, in reply to "Orthogonal Axes?"
BCC and FCC are examinable -- the conventional unit cell has orthogonal axes.
As a first approximation, assume BCC, FCC, Simple Cubic are certainly examinable. Tetragonal and Orthorhombic are less examinable, but some questions can still be asked (for example, they might ask you describe Tetragonal or Orthorhombic, and potentially could ask you about the recip lattices, but should not ask you to analyze a diffraction pattern of these crystal systems).
Last year's exam seemed to push the boundaries a bit, but in some liberal interpretation of the question, it only asked about FCC and BCC.
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