51. Which one of the following is not a characteristic feature of alloys? A.Compounds B.Mixtures C.Solutions D.Homogeneous systems
Answer: Option D Solution: An alloy is a mixture or metallic solid solution composed of two or more elements. So they are heterogeneous systems. Complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may or may not be homogeneous in distribution, depending on thermal (heat treatment) history. Alloys usually have different properties from those of the component elements.
