Question

why do we need to group material
in short.
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Answer 1

Materials are grouped together on the basis of similarities and differences in their properties. Materials are grouped together for convenience and to study their properties. Grouping materials saves our time, energy and makes our work easier.

Answer 2

Answer:

materials are grouped together on the basis of similarities and differences in their properties . materials are grouped together for convenience and to study their properties. grouping of material saves our time , energy and makes our study easier . ...