The stability of multimolecular colloids is primarily due to:
Electrophoretic effect
Brownian motion
Stabilizing agents or surfactants
Attractive van der Waals forces
Multimolecular colloids are typically stabilized by the presence of stabilizing agents or surfactants, which adsorb on the surface of the macromolecules and create a repulsive barrier, preventing coagulation or precipitation.
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5 g of Na2SO4 was dissolved in x g of H2O. The change in freezing point was found to be 3.820C. If Na2SO4 is 81.5% ionised, the value of x (K

A capacitor is made of two square plates each of side 'a' making a very small angle
A solution of m-chloroaniline, m-chlorophenol and m-chlorobenzoic acid in ethyl acetate was extracted initially with a saturated solution of NaHCO3 to give fraction A. The leftover organic phase was extracted with d