Question

Iron filings and sulphur powder were mixed together and a part
of the mixture was heated strongly in a china dish. It was
observed that the magnetic property of the mixture was lost
after heating it.
a. When the mixture of iron fillings and sulphur powder is
heated in a china dish ............change takes place.
b. On adding dilute hydrochloric acid to the substance
formed by heating the mixture of iron and sulphur......... gas
is evolved.
Your answer​

Answer 1

Answer:

a- physical

b-hydroxide

Answer 2

$\implies\texttt{a \: Combination\: reaction}$

$\implies\texttt{B \: Dioxide}$

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