Question

13. A bottle of dry ammonia and a bottle of dry hud
chloride connected through a long tube are open
simultaneously at both the ends. The white ring first for
will be:
(a) at the centre of the tube
(b) near the ammonia bottle
(c) near the HCl bottle
(d) throughout the length of the tube​

Answer 1

Near the ammonia bottle

Because ammonia has less mass than Hcl therefore it evaporates firstly and forms vapour around Hcl