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(B) Brownian movement is the random zig-zag motion of colloidal particles.According to the Stokes-Einstein equation,the diffusion coefficient $D$ is i

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Smaller size and lesser viscosity

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(B) Brownian movement is the random zig-zag motion of colloidal particles.According to the Stokes-Einstein equation,the diffusion coefficient $D$ is inversely proportional to the radius of the particle $r$ and the viscosity of the medium $\eta$ $(D \propto \frac{1}{r \eta})$.Therefore,smaller particle size and lower viscosity of the dispersion medium result in faster Brownian movement.

Relatively which conditions favour the faster Brownian movement of colloidal particles in solution?

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