railway RRB JE (CBT I + CBT II) Mock Test 2024 Production Engineering (Manufacturing) Joining Soldering and Brazing
Which of the following is the usual (approximate) composition of the soft solder used in soldering?
1
Lead 80% and Tin 20%
2
Lead 63% and Tin 37%
3
Lead 90% and Tin 10%
4
Lead 37% and Tin 63%