| Answer | Crossword Clue |
|---|---|
| YTTRIA | Oxide used in picture tubes |
| YTTRIA | Oxide used in television tubes |
| CHROMIC | ... oxide, used in metallurgy |
| LIME | Oxide used in cement and mortar. |
| XENON | Gas used in tubes |
| YTTRIA | Powder used in television tubes |
| ARGON | Gas used in light tubes |
| XENON | Gas used in TV tubes |
| BUTYL | Rubber used in inner tubes |
| BURETS | Glass tubes used in chemistry. |
| YTTRIA | Powder used in color TV tubes |
| YTTRIUM | Element used in old television tubes |
| ARGON | Inert gas used in vacuum tubes |
| BUTYL | Synthetic rubber used in inner tubes |
| IGNITRONS | Rectifier tubes used in high-energy research |
| ARGON | Gas used in light bulbs, radio tubes, etc. |
