Question

4.The material used to coat inside face of CRT is *
1 point
Carbon
Sulphur
Silicon
Phosphorus

Answer 1

Answer:

for carbon they will wood my friend please follow me

Answer 2

For the inner funnel coating, monochrome CRTs use aluminum while color CRTs use aquadag; Some CRTs may use iron oxide on the inside. On the outside most CRTs (but not all) use aquadag. Aquadag is an electrically conductive graphite-based paint.

hence, the correct option is Phosphorus.