When dilute hydro-chloric acid is added to granulated zinc placed in a test tube, the observation made is
(1) the surface of the metal turns shining
(2) the reaction mixture turns milky
(3) odour of chlorine is observed
(4) a colourless and odorless gas evolves with bubbles
When dilute hydrochloric acid is added to granulated zinc, colorless and odorless hydrogen gas is evolved with bubbles.
Hence, the correct answer is option 4.
Lakhmir Chemistry (2020, 2021)