Their most notable feature allows them to produce nitriles when reacted with ammonia, and they undergo reactions with Lindlar's catalyst to produce the less saturated of their two sister groups.
Vinyl groups can be produced on them with the use of a saturated solution of cuprous chloride, and they themselves can be produced from the dehalogenation of tetrahalides or  the reaction of sodium acetylides with primary alkyl halides. Their most notable feature allows them to produce nitriles when reacted with ammonia, and they undergo reactions with Lindlar's catalyst to produce the less saturated of their two sister groups. For 10 points, name these straight-chain hydrocarbons, of which acetylene is the smallest member, and which contain a carbon-carbon triple bond.
Vinyl groups can be produced on them with the use of a saturated solution of cuprous chloride, and they themselves can be produced from the dehalogenation of tetrahalides or  the reaction of sodium acetylides with primary alkyl halides.
{alkynes} [{do not accept alkanes or alkenes} or any other wrong answers]