Crystalline metal can be transformed into metallic glass by

Classify the following solids in different categories based on the nature of intermolecular forces operating in them:
Potassium sulphate,tin,benzene,urea,ammonia,water,zinc sulphide,graphite,rubidium,argon,silicon carbide.

What type of semiconductor is obtained by doping $Si$ with $B$ $(Al, Ga)$?

The reason why solid $NaCl$ is a poor conductor of electricity is .......

Which one of the following metal oxides is antiferromagnetic in nature?

What is the electrical conductivity of ionic solids?