Why are medicines more effective in colloidal state ?

Why is ice at 273 K more effective in cooling than water at the same temperature ?

Why is ice at 273 K more effective in cooling than water at the same temperature?

Tyndall effect in colloidal solution is due to

select correct statement (s) : blood is a colloidal solution, Alum is used in water purification, River water is a colloidal solution of clay, Colloidal medicines are more effective due to large surface area.

Out of BaCl_2 and KCl which one is more effective in causing coagulation of negatively charged colloidal sol. Give reason.

Why are powdered substances more effective adsorbents than their crystalline forms?

Out of MgCl_2 and AlCl_3 , which one is more effective in causing coagulation of negatively charged sol and why?

Which light range is more effective in Photosynthesis.