Is Matter Around Us Pure Test - 9

The mixture in which particles are not distributed evenly and forms separate layer if left undisturbed. The mixture of Albumin and water forms a heterogeneous mixture.

The separation of constituents from homogeneous mixture is difficult as compared to heterogeneous mixture.
Milk is a colloidal substance. So, milk is not a pure substance.
Statement (A) and (B) incorrect statement.

The dilute of alcohol and water is homogenous it mix uniformly. Alcohol and water do not form a separate boundary if left undisturbed and both are uniformly distributed.

 (1) Homogeneous are the types of mixtures in which the components mixed are uniformly distributed throughout the mixture or in other words “the same throughout”. We can observe only one phase of matter in homogeneous mixtures.
(2) Heterogeneous  is a type of mixture in which all the components are completely mixed and all the particles can be seen under a microscope. We can easily identify the components and more than one phase can be seen by naked eyes.
(3) Chemical change brings change in the chemical properties of matter and formation of a new substance always takes place. A chemical change is also called a chemical reaction.
(4) A physical change brings changes in the physical properties (like colour, hardness, rigidity, fluidity, density, melting point, boiling point etc.) of the matter. It may or may not be reversible.

(1) A solution has a solvent and solute as its components. The component in the larger amount is the solvent .
(2) A solution has a solvent and solute as its components. The component in the lesser amount is the solute. 
(3) True solution is a homogeneous mixture.
(4) A suspension is a heterogeneous mixture of two or more substances.

In solution composition is not fixed and it has variable composition. In solution the solute particles cannot be separated by filtration. True solution is a homogeneous and transparent mixture.
So, stamen B and D are correct statement regarding solution.

In an emulsion, dispersed phase is present with some dispersion medium. In case of water-in-oil emulsions, water droplets are dispersed in a continuous oil phase. Water-in-oil emulsions are more common in oil industries. These emulsions are also called as oil emulsions. Butter, cold cream and cod liver oil are some common examples of water in oil emulsions.

The components of a colloidal solution are the dispersed phase and the dispersion medium. The solute-like component or the dispersed particles in a colloid form the dispersed phase, and the component in which the dispersed phase is suspended is known as the dispersing medium.