Answer :
The statements which are true about heterogeneous mixtures are they settle out, they exhibit the tyndall effect and they exhibit brownian motion.
What are heterogeneous mixtures?
Heterogeneous mixtures are those mixtures in which composition of their constituent partiles are not identical or even, they may vary place to place.
- In the heterogeneous mixtures, solutes are present unevenly in the solution and this uneven arrangement is also arises the brownian motion means the randon motion of the particles.
- And these mixtures also shows the tyndall effect as light passes through the suspended particles may get scattered.
- On placing these mixtures without any motion for a long time, then it may sometimes settle down at the bottom.
Hence, options (1), (2) & (4) are correct.
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