ASVAB Shop Information Practice Test 672030

Question 2 of 5

Soldering is a low-temperature process by which two or more items (typically metal) are joined together by melting a filler metal (solder) into the joint. An electrically powered soldering iron or soldering gun is used to melt the solder which is an alloy of lead and tin that has a melting point below the melting point of the items being joined. A chemical cleaning agent called flux is also used to clean the surfaces before soldering.

Which of the following statements about solding is not true?

flux is used to clean surfaces before soldering

solder has a comparatively low melting point

solder is an alloy of lead and tin

soldering can only join metals