To improve suspension stability by adjusting the dispersion medium, which action is recommended?

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Multiple Choice

To improve suspension stability by adjusting the dispersion medium, which action is recommended?

Explanation:
Increasing the viscosity of the dispersion medium is the best move because it slows how fast suspended particles settle. Sedimentation velocity is inversely related to viscosity (as viscosity goes up, settling slows), so adding thickening agents to the medium reduces settling and helps keep the suspension uniform over time. Decreasing viscosity or increasing temperature would speed up settling, and while decreasing temperature can raise viscosity, that’s a storage condition, not a routine formulation adjustment to the dispersion medium.

Increasing the viscosity of the dispersion medium is the best move because it slows how fast suspended particles settle. Sedimentation velocity is inversely related to viscosity (as viscosity goes up, settling slows), so adding thickening agents to the medium reduces settling and helps keep the suspension uniform over time. Decreasing viscosity or increasing temperature would speed up settling, and while decreasing temperature can raise viscosity, that’s a storage condition, not a routine formulation adjustment to the dispersion medium.

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