Gas na musamman
Gas na musamman shine iskar gas da ke saduwa da takamaiman dalilai, gami da iskar gas ɗaya ko gauraye. Yawancin lokaci ana iya raba shi zuwa gas na lantarki, daidaitaccen gas, iskar kare muhalli, gas na likitanci, iskar walda, iskar gas, da dai sauransu, waɗanda ake amfani da su sosai a cikin kayan lantarki, wutar lantarki, sinadarai, ma'adinai, ƙarfe, narkewar ƙarfe mara ƙarfe, thermal. injiniyanci, nazarin halittu, kula da muhalli, bincike da bincike na likita, adana abinci da sauran fannoni.
