1.

`{:("Column-I","Column-II"),("Dry ice","Ionic solid"),("Silica","Molecular solid"),("Brass","Network solid"),("Wurtzite","Metallic solid"):}`A. A-q,B-r,C-s,D-pB. A-p,B-q,C-s,D-rC. A-r,B-q,C-s,D-pD. A-p,B-q,C-r,D-s

Answer» Correct Answer - 1
(A) Dry ice=Molecular solid (containing `H_(2)O` molecules held together)
(B) Silica=Network solid (`SiO_(2)` forming a network through covalent bonds)
(C) Brass=Metallic solid (copper+Zinc)
(D) Wurzite=Ionic solid `overset(2+2-)((ZnS))`


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