Author Question: Galvanizing and plating are familiar uses of zinc, lead and tin. On what base material are these ... (Read 68 times)

vicky · **on:** Jul 26, 2018

Galvanizing and plating are familiar uses of zinc, lead and tin. On what base material are these metals plated and what do they resist?

A) On pipe joints to resist leaking B) On babbitt bearings to resist wear
C) On steel to resist corrosion D) On die castings to resist deformation

Question 2

When a carbon steel cutting tool such as a drill is heated to a blue color, it has:

A) Been re-tempered and is softer B) Been re-tempered and is harder
C) Lost its temper D) Not been affected all