Question

Which among the following are commonly used for making a safety pin?

• A. Wood and glass
• B. Plastic and glass
• C. Leather and plastic
• D. Steel and plastic

Answer 1

The correct option is D

Steel and plastic

Explanation for correct option:

D. Steel and plastic

The materials that are commonly used for making safety pins are steel and plastic.

Properties of steel:

• Steel is hard and tough in nature.
• It has high tensile strength.
• It is light in weight but high in strength.
• Safety pins are made up of steel to get sharp points.

Properties of plastic:

• Plastics are light in weight and chemically stable.
• Thye can be molded into different shapes.
• They have low thermal conductivity.
• Plastic is sued in safety pins to seal the edges.

Explanation for incorrect options:

The materials that are commonly used for making safety pins are steel and plastic. Thus options A, B, and C are incorrect.

Hence, the correct option is D i.e. Steel and plastic.