Question

What do you mean by 'hydrophilic fluids'?
1. Substances that prefer to dissolve in oily fluids
2. Substances that prefer to dissolve in alkaline fluids
3. Substances that prefer to dissolve in acidic fluids
4. Substances that prefer to dissolve in water type fluids

Answer 1

Correct Answer - Option 4 : Substances that prefer to dissolve in water type fluids

Explanation:

Hydrophilicity

• Hydrophilicity is a critical feature in fluid flow mechanisms used for microfluidic devices.
• The resistance to fluid flow is especially important in a passive flow device where capillary action is used to move fluid such as test strips.
• Hydrophilic surfaces are “water-loving”, in that they allow fluids to wet out or flow across a surface and promote fluid flow through a channel into a test chamber.
• The surface energy or degree of hydrophilicity varies widely in device construction materials from water-repelling or hydrophobic (low surface energy) to hydrophilic (high surface energy) where water easily wets a surface.