Epoxy resin is used for which of the following applications?

• A. Printed circuit boards
• B. Clothing
• C. Food packaging
• D. Curtains

Answer: (A)

Epoxy resin provides a hard, durable, and electrically insulating coating when it cures. That combination is perfect for protecting and insulating delicate electronic components, so it’s widely used on printed circuit boards to shield circuits from moisture, chemicals, and mechanical stress.

Clothing and curtains rely on flexible fabrics and finishes, not rigid coatings, so epoxy would make them stiff and uncomfortable. Food packaging uses materials that are safe for direct contact with food and that can be formed into films or flexible coatings; epoxy resins are not typical for these applications due to their rigidity and potential safety concerns, making PCBs the best match.