Question

The gas evolved when Zinc reacts with dilute sulphuric acis is :
(a) colourless, odourless, combustible
(b) colourless, foul smelling, combustible
(c) colourless, pungent smelling, burns with a pop sound
(d) Brown coloured, pungent smelling, does not burn

Answer 1

(c) hydrogen but i don't know if it has a pungent smell

Answer 2

gas evolved is hydrogen which is colour less , foul smell, combustible.