Crystalline solids show properties that differ with direction, so they are:
AAnisotropic
BIsotropic
CAmphoteric
DAllotropic
Answer & Solution
Correct answer: A. Anisotropic
1. Electrical resistance or refractive index varies with direction.
2. That comes from different arrangements along different lines.
3. So crystalline solids are anisotropic.
_Source: NCERT Class 12 Chemistry Part I, Chapter 1, The Solid State._
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