Assertion reason .....
A: the particles of a suspension can be seen by naked eye.
R: when the suspension is left undisturbed it become unstable.
Dear student,
The particle of a suspension can be seen by a naked eye because the size of the particles of the suspension are in the order of 103 ​which is sufficiently big to be seen with our naked eye.
When the suspension is left undisturbed it becomes unstable because the solute particles settle down, they can be separated by the process of filtration.
Hence both the assertion and reason are correct but the reason is not the correct explanation of assertion.
So the correct answer is option B.
Regards
The particle of a suspension can be seen by a naked eye because the size of the particles of the suspension are in the order of 103 ​which is sufficiently big to be seen with our naked eye.
When the suspension is left undisturbed it becomes unstable because the solute particles settle down, they can be separated by the process of filtration.
Hence both the assertion and reason are correct but the reason is not the correct explanation of assertion.
So the correct answer is option B.
Regards