Match the solids PVC (polyvinyl chloride), Ni, CaSO₄, sucrose, and diamond to their correct classifications.
(i) Molecular solid
(ii) Metallic solid
(iii) Covalent network solid
(iv) Amorphous solid
(v) Ionic solid

• A. (i) Molecular solid - PVC (polyvinyl chloride); (ii) Metallic solid - CaSO⁴ ; (iii) Covalent network solid - sucrose; (iv) Amorphous solid - diamond ; (v) Ionic solid - Ni
• B. (i) Molecular solid - PVC (polyvinyl chloride); (ii) Metallic solid - Ni; (iii) Covalent network solid - diamond → amorphous solid; (iv) Amorphous solid - sucrose; (v) Ionic solid - CaSO⁴
• C. (i) Molecular solid - sucrose; (ii) Metallic solid - CaSO⁴; (iii) Covalent network solid - PVC (polyvinyl chloride); (iv) Amorphous solid - diamond; (v) Ionic solid - Ni
• D. (i) Molecular solid - sucrose; (ii) Metallic solid - Ni; (iii) Covalent network solid - diamond; (iv) Amorphous solid - PVC (polyvinyl chloride); (v) Ionic solid - CaSO⁴
• E. (i) Molecular solid - diamond; (ii) Metallic solid - CaSO⁴; (iii) Covalent network solid - PVC (polyvinyl chloride); (iv) Amorphous solid - sucrose; (v) Ionic solid - Ni

Answer: (D)