Question

A gas jar containing a brown gas is kept inverted over another gas jar filled with air.
After some time, the second jar is also fills with a brown-coloured gas. What characteristic of particles of matter is being referred to here?​

Answer 1

Answer:

When a gas jar containing colourless air is kept upside down over a gas jar full of brown-coloured bromine vapour, then after some time, the brown colour of bromine vapour spreads into the upper gas jar making both the gas jars appear brown in colour.