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Mixtures are formed when two or more sub...

Mixtures are formed when two or more substances mix together in any proportion. Mixtures can be uniform (homogeneous) or non-uniform (heterogeneous). They possess the property of their constituents and can be separated by physical means.
Milk is a

A

homogeneous mixture and can be separated by physical means.

B

homogeneous mixture and cannot be separated by physical means

C

heterogeneous mixtureand can be separated by physical means.

D

heterogeneous mixture and cannot be separated by physical means.

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**Step-by-Step Solution:** 1. **Definition of Mixtures**: Understand that mixtures are formed when two or more substances combine in any proportion. They can be classified as homogeneous or heterogeneous based on their uniformity. 2. **Homogeneous vs. Heterogeneous Mixtures**: - Homogeneous mixtures have a uniform composition throughout. This means that the components are evenly distributed, and you cannot distinguish one component from another. - Heterogeneous mixtures have a non-uniform composition. In these mixtures, the different components can be seen and identified separately. 3. **Analyzing Milk**: - Milk consists of various components, including water, fat, proteins, and lactose. - When observing milk, you can see that the fat globules and proteins are not uniformly distributed. This indicates that milk does not have a uniform composition. 4. **Conclusion About Milk**: - Since milk has components that are not uniformly mixed and can be visually distinguished, it is classified as a heterogeneous mixture. 5. **Separation of Components**: - Both homogeneous and heterogeneous mixtures can be separated by physical means. In the case of milk, methods such as centrifugation can be used to separate the fat from the liquid. 6. **Final Statement**: - Therefore, milk is a heterogeneous mixture that can be separated by physical means.
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Knowledge Check

  • Mixtures are formed when two or more substances mix together in any proportion. Mixtures can be uniform (homogeneous) or non-uniform (heterogeneous). They possess the property of their constituents and can be separated by physical means. The substance used for mixture formation is

    A
    compound
    B
    element
    C
    both (a) and (b)
    D
    none of these.

  • A mixture of two or more gases can be separated by

    A
    Sedimentation
    B
    Liquefication
    C
    Distillation
    D
    Decantation

  • Which of the following is the property due to which two components of a mixture can be separated by distillation?

    A
    Difference in densities
    B
    Difference in boiling points
    C
    Difference in colour
    D
    Difference in solubilities

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