Match the following column I with column II

Column I	Column II
(a) Colloidal	1. Liquid or solid or gas
(b) Crystalloid	2. $1 \mathrm{nm}-1000 \mathrm{nm}$
(c) True solution	3. Does not show Tyndall effect
(d) Disperse phase	4. Urea
	5. Either liquid or gas but should not be solid

• Colloid-particle size ranges from $1 \mathrm{nm}-1000 \mathrm{nm}$.
•  Urea solution can pass through the membrane easily as it has crystalloid properties.
• True solution has the particle size is less than 1 nm and Tyndall effect is a property of colloidal solution, no true solution.
• A dispersed phase can be a solid (or) liquid (or) gas resembling to be solute that is mixed in the medium.

Hence option a-2, b-4, c-3, d-1 is the correct match.