Which of the following are examples of solder?

• A. 95/5 & Stay Brite 8
• B. Flux Powder
• C. Copper Rod
• D. Tin Alloys 60/40

Answer: (A)

Solder is a filler metal with a low melting point used to join metals, flowing into the joint to form a bond as it cools. The pair shown—95/5 and Stay Brite 8—are clear examples of solder because they are filler metals designed to melt at low temperatures and wet the joint surfaces. 95/5 indicates a specific alloy composition, and Stay Brite 8 is a common branded solder alloy; both are intended to be melted to create the joint without melting the base metals themselves.

Flux powder, by contrast, is flux, not a filler metal; it cleans and helps the solder flow but does not itself fill the joint. Copper rod is a piece of base metal, not a filler metal. Tin alloys like 60/40 are also solders, but the option in question identifies two solder examples together, illustrating typical compositions or brands used in soldering.