A) On heating, a chemical change takes place and a new compound is formed.
B) On heating, iron becomes non-magnetic hence, it is not attracted by magnet.
C) On heating, a physical change takes place hence iron and sulphur gets mixed up.
D) On heating, iron evaporates and only sulphur is left behind.
Correct Answer: A
Solution :
\[\underset{Iron}{\mathop{Fe}}\,+\underset{Sulphur}{\mathop{S}}\,\xrightarrow{Heat}\underset{Iron\,\,sulphide}{\mathop{FeS}}\,\] On heating iron and sulphur, a new substance, iron sulphide is formed, so it is a chemical change.You need to login to perform this action.
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