To prepare for Chapter 1 Solid State in NCERT Solutions for Class 12 Chemistry, it is important to have a thorough understanding of the physical properties, including the distinctions between crystalline and amorphous solids. Students should also have a clear understanding of concepts such as unit cell and crystal lattice, cubic close packing and hexagonal close packing, and octahedral and tetrahedral void. The NCERT Solutions are an essential reference material for Class 12 students preparing for CBSE exams, as they provide student-friendly explanations that aid in grasping important concepts.