Correct Answer - Option 4 : Iodised table salt
Concept:
Homogenous and Heterogeneous mixture
Homogenous Mixture
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Heterogeneous Mixture
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It is the mixture of two or more substances in which constituent particles have homogeneity that means the size of particles is the same.
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The size of particles is not the same inhomogeneous mixture.
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Particles cannot be seen with the naked eye.
For example, in a solution of salt and water salt cannot be seen.
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Particles can be seen by the naked eye.
For example, in a mixture of pebbles and iron, we can identify each of them.
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Examples are
Solutions of salt and mixture, alloys: which are the solution of metals
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Examples are
Sand water mixture
Milk, iodized salt
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Explanation:
- Iodised table salt is a heterogeneous mixture.
- Iodisation of salt is basically the physical process of mixing the iodine compound with common salt.
- The composition of consistent particles in the iodized salt is not uniform or homogenous.
- Hence, even though the components are not identified by the naked eyes, Iodised table salt is not a homogenous mixture.
So, the correct option is Iodised table salt.