Which of the following is not a property of engineering materials?*1 pointd) Electrical propertiesa) Mechanical propertiesb) Chemical propertiesc) Polymorphism

To determine which of the options is not a property of engineering materials, we need to analyze each option one by one.

a) Mechanical properties: Engineering materials are known for their mechanical properties, such as strength, hardness, elasticity, and toughness. These properties are crucial for designing and constructing various structures and machines. Therefore, mechanical properties are indeed a property of engineering materials.

b) Chemical properties: Engineering materials interact with different substances and environments, and their chemical properties play a significant role in determining their behavior and performance. These properties include corrosion resistance, reactivity, and stability. Hence, chemical properties are also a property of engineering materials.

c) Polymorphism: Polymorphism refers to the ability of a material to exist in different crystal structures or forms. While polymorphism is a property observed in certain materials, it is not a defining property of engineering materials. Therefore, polymorphism is a property that is not typically associated with engineering materials.

d) Electrical properties: Electrical properties, such as conductivity, resistivity, and dielectric strength, are essential considerations in engineering materials used for electrical and electronic applications. Thus, electrical properties are indeed a property of engineering materials.

Based on the analysis, the option that is not a property of engineering materials is c) Polymorphism.