Q1: The tensile strength of plastics ranges from __________ kg/mm².

ANS:D - 0.1 to 10

The tensile strength of a material refers to its ability to withstand stretching or pulling forces without breaking. When it comes to plastics, their tensile strength can vary widely depending on factors such as the type of plastic, its molecular structure, and any additives or reinforcements included during manufacturing. Plastics generally have relatively low tensile strengths compared to metals or other materials like ceramics. The given range of 0.01 to 0.1 kg/mm² reflects this characteristic. It means that plastics typically have tensile strengths measured in the range of 0.01 to 0.1 kilograms per square millimeter (kg/mm²). This range indicates that plastics are not as strong as metals, which often have tensile strengths measured in tens or hundreds of kilograms per square millimeter. However, plastics offer other advantages such as lightweight, flexibility, and corrosion resistance, making them suitable for a wide range of applications despite their relatively low tensile strength.