Dilute hydrochloric acid is added to granulated zinc taken in a test tube. the following observation are recorded. point out the correct observation :-
1) The surface of metal become shiny
2) The reaction mixture turns milky
3) Odour of a pungent smelling gas is evolved
4) A colour less and odourless gas is evolved
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Answer:
4)A colour less and odourless gas is evolved(Hydrogen gas)
Explanation:
Zn + 2Hcl --> ZnCl2 + H2
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