1. Solder joints are used in applications where the maximum temperature of the liquids is _____.

2. The solder most commonly used on low-pressure copper fittings is made from _____.

3. When steel wool is used to clean copper tubing, it should be _____.

4. When soldering 1-1/2″ tubing in a horizontal position, you should _____.

5. Grease and oil must be kept away from oxygen tanks used for brazing because they _____.

6. Which of these actions is taken to prevent over-pressurizing the torch hoses during equipment setup?

7. When using a brazing flux, it should be applied _____.

8. When brazing very small joints or thin metal, the type of flame used in order to prevent the base metal from melting is a(n) _____.

9. When brazing larger joints, _____.

10. When copper is being brazed to steel _____.