Question

When Iron is put into acid a gas released which is odor less and when Ironsulphid is put into acid released a gas that gives rotten egg smell this difference in observation conclude that.(Select the appropriate conclusion)
(i)Iron is an element
(ii) Iron sulphide is not a compound
(iii) Iron loses its property in iron sulphide and it develop a new property
(iv)Iron is pure substance and compound is impure substance



plz answer.....urgent

Answer 1

3 option. as element tends to lose it’s properties when it forms a compound. Eg Salt- NaCl sodium is highly reactive but when it forms salt it is edible. Hope it helps you

Answer 2

(iii) Iron loses its property in iron sulphide and it develop a new property