Solutions Colourless gas, used in lighting has 5 entries with similar clues
- 5-letter words
- ozoneColourless gas, O3
- 6-letter words
- heliumGas used in fluorescent lighting tubes, lasers, and balloons
- oxygenColourless, odourless, tasteless, nonflammable gas
- 7-letter words
- ammoniaA colourless pungent gas
- 12-letter words
- formaldehydeDisinfectant colourless gas