Question

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​

Answer 1

Answer:

4)A colour less and odourless gas is evolved(Hydrogen gas)

Explanation:

Zn + 2Hcl --> ZnCl2 + H2