Class 9 Science
Class 9 science important questions with answers pdf
NCERT Solutions Class 9 Science
NCERT questions of science class 9
Important questions Science NCER
Class 9 Study 2022-2023
NCERT Class 9 Science
Write the chemical equation describing the formation of iron (II) sulphide from iron and sulphur
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Fe (s) + S (s) → Fe S (s)