Question

the difference between homogeneous and heterogeneous mixture?

Answer 1

A mixture is said to be homogeneous if the constituent particles are uniformly distributed.
Example: Air, Sugar solution , Salt solution..
that is we cannot distinguish between the constituent particles.

A mixture is said to be heterogeneous, if the constituent particles are not uniformly distributed.
Example: Muddy water, Chalk powder in water.

Here we can separately see the constituent particles.