What is the major drawback to use whiskers as a dispersed agents in composites? a)- high price b)- large length to diameter ratios c)- difficult to disperse d)- a & c

C) a&c

Explanation: Composite materials are the materials which are made up of the two or more material of different properties.They are usually having properties like high hardness,low in density,no dissolving into each other etc. Whiskers as a dispersing agent in composite materials are usually not preferred because they are expensive as well as they are not easy to disperse in the composite material.Thus option (c) is the correct answer.

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