Solid

Classify the following solids into four categories based on intermolecular forces of interaction. Caesium chloride, Solid carbon disulphide , Bronze ,Boron nitride, Washing soda , Carborundum , Corrudum , Solid NH_3 , Solid camphor , Silver , Silica

Column - I and Column - II contains four emtries each. Entries of Column -I are to be matched with some entries of Column - II . One or more than one entries of Column -I may have the matching with the same entries of Column - II. {:("column-I","column-II"),("(A) solid dispersed in solid","(P) solid foam "),("(B) Gas dispersed in solid ",(Q) " Aerosol"),("(C) solid dispersed in liquid ","(R) Solid sol "),("(D) solid dispersed in gas ","(S) sol "):}

A solid substance 'A' is very hard and electrical insulator both in the solid state as well as in molten state. It has also very high melting point. Is the solid metal like silver or network solid like silicon carbide (SiC) ?