From the given option choose the one that does not belong to the group based on solubility:

Question

Accepted Answer

Option 3, "Oil," is the correct answer because it does not belong to the group based on solubility in water. Here's the detailed explanation:

1. **Oil (Option 3)**: Oil is a non-polar substance, which means it does not dissolve in water, a polar solvent. The principle of "like dissolves like" explains that polar substances dissolve in polar solvents, and non-polar substances dissolve in non-polar solvents. Since oil is non-polar, it does not mix with water, making it distinct from the other options.

2. **Milk (Option 1)**: Milk is an emulsion, which means it contains both water and fat. However, the water content in milk allows it to mix with water, making it soluble to a certain extent. The proteins and sugars in milk are also water-soluble, which is why milk can be mixed with water-based substances.

3. **Honey (Option 2)**: Honey is primarily composed of sugars like fructose and glucose, which are highly soluble in water. When honey is added to water, it dissolves readily, making it a water-soluble substance.

4. **Ink (Option 4)**: Ink is typically a water-based solution or suspension, which means it is designed to dissolve or disperse in water. This property allows ink to be used in writing and printing, as it can easily mix with water to create a uniform color.

In summary, Option 3, "Oil," is the correct answer because it is the only substance among the options that does not dissolve in water, distinguishing it from milk, honey, and ink, which are all water-soluble to varying degrees.