Question

11. A bottle of perfume was opened in a room. The smell of its vapour spread in the entire room. Name the property of the
perfume which causes it.
12. The gas jar (A) containing a colourless gas is kept upside down over another gas jar; (B) containing a reddish brown gas
The two jars are separated by a glass plate placed is between the jars.
Answer the following.
(i) Name the gases in the two jars.
(ii) What happens when the glass plate placed in between the jars is removed?
(i) Name the phenomenon that takes place after the gas plate between the jars is removed.
(iv) Name a coloured solid and a colourless liquid which could show the same phenomenon. please tell me the answer of its fourth part.​

Answer 1

11. diffusion

12.  4- The solid can be potassium permaganganate (pink colour) which when dissolved in water (colourless) shows diffusion (you will observe that the solution acquires pink color