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☞ Water has the strongest cohesive property among the given options. Cohesion refers to the intermolecular attraction between like molecules. Water molecules are polar, which means they have a partial positive charge on one end and a partial negative charge on the other end. When water molecules come into contact with each other, the partial positive end of one molecule is attracted to the partial negative end of another molecule. This creates a strong cohesive force between the water molecules, which allows them to stick together and form droplets, for example.
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☞ Baby oil and vinegar are non-polar and polar substances, respectively, which means their molecules do not have a partial positive or negative charge. Therefore, there is no significant attraction between their molecules, resulting in weaker cohesive properties compared to water.
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☞ Soapy water, on the other hand, has a lower cohesive property than water because the soap molecules interfere with the cohesive forces between water molecules. The soap molecules have a polar end that is attracted to water molecules and a non-polar end that is repelled by water molecules. This disrupts the cohesive forces between water molecules and reduces the surface tension of the solution, resulting in weaker cohesive properties compared to pure water.
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