Q.1. What is crystallite and colloidal particle ?
Crystallite particle : the particle which can passes through the semi permeable membrane are known as crystallite particle.
        The size of crystallite particle is less than that of 10 cm.
Eg : sugar, urea, salt solution.

Colloidal particle : the particle which cannot pass through the semipermeable membrane are known as colloidal particle.
     The size of colloidal particle is between 10 – 10 cm.
Eg : starch, protein, albumin, gelatin.

Q.2. What is suspension ?
Suspension : the particle whose size is more than 10 cm and which make heterogeneous solution with solvent is known as suspension.
Eg : muddy water, barium sulphate solution etc.

Q.3. what is true solution ?
        True solution : the solution in which the size of the particle is less than 10 cm, 10m or 1nm that solution is known as true solution.
Eg : aqueous solution of sugar, salt.

Q.4. what is colloid solution ?
        Colloid solution : the heterogeneous solution in which size of the particle in between 10 cm to 10 cm are known as colloid solution.
               The particle which are sprayed over the solvent is known as dispersed phase and the solvent is known as dispersion phase.
Eg : milk, air.

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