SSC
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Clear mixtures that have fully dissolved parts
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A mixture that will separate into different parts when left to settle
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A suspension that appears cloudy and scatters light
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A solution that has all parts visible
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Detailed explanation-1: -The particles in a colloid are large enough to scatter light, a phenomenon called the Tyndall effect. This can make colloidal mixtures appear cloudy or opaque, such as the searchlight beams shown in [link]. Clouds are colloidal mixtures.
Detailed explanation-2: -A colloid is a heterogeneous mixture in which the dispersed particles are intermediate in size between those of a solution and a suspension. The particles are spread evenly throughout the dispersion medium, which can be a solid, liquid, or gas.
Detailed explanation-3: -Most colloids are translucent but some look almost clear with a faint color. Colloidal solutions look cloudy because of the Tyndall effect, the way the particles scatter light. To check if a solution is a colloidal solution shine a tight beam through it.