Which of the following are not compounds?
(a) Chlorine gas
(b) Potassium chloride
(c) Iron
(d) Iron sulphide
(e) Aluminium
(f) Iodine
(g) Carbon
(h) Carbon monoxide
(i) Sulphur powder

AcademicChemistryNCERTClass 9

A compound is a substance consisting of two or more elements combined chemically in a fixed proportion by mass.

Chlorine gas, iron, aluminium, iodine, carbon and sulphur powder are not compounds.

Updated on 10-Oct-2022 13:29:38