physical pharmacy

The surface tension of water is ...................

• 70 dyne/cm

• 72.8 dyne/cm

• 82.4 dyne/ cm

• 69.8 dyne/cm

The viscosity of water is ............

• 1 cp

• 72.8 cp

• 25 cp

• 66.8 cp

The critical solution temperature of phenol and water is ............

• 50 °C

• 66.8°C

• 72.8 °C

• 65 °C

The slope of this line =

• viscosity

• fluidity

• shear stress

• rate of shear

The slope =

• Fluidity

•  1/ η

• φ

• all of the above

This rule is used for determination of .....................

= 72.8 x  N av. water

    N av.  unknown

• surface tension

• viscosity

• adsorption

• CST

The number of drops is ................. proportional to surface tension

• directly

• inversely

The time is ..................... proportional to viscosity

• directly

• inversely

The .....................is the process of holding molecules (adsorbate) at the surface of solid (adsorbent).

• Adsorption

• surface tension

• desorption

• absorption

The Adsorbate may be gas or solid or liquid

• True

• False