| Answer | Crossword Clue |
|---|---|
| GASES | Neon and butane |
| GASES | Butane and methane |
| GASES | Methane and butane |
| ISOMERS | Butane and methylpropane |
| FUELS | Butane and propane. |
| bivinyl | colorless, flammable gas, C4H6, soluble in alcohol but not in water, usually derived from butane or butene: used chiefly in the manufacture of rubber and paint, and in organic synthesis |
