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Question
Which of the following food items is not a colloid?
Which of the following food items is not a colloid?
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Solution
The correct option is B Water
The explanation for the correct option
Option B, Water
- Water is a compound as it is made up of water molecules in a fixed ratio.
- Water molecules are made up of hydrogen and oxygen atoms in a definite ratio of two hydrogens to one oxygen atom, a 2:1 ratio.
The explanation for incorrect options
- Option A, Milk isn't a pure substance as it is a colloidal solution made up of a blended mixture of lipids, proteins, sugar, and water. As a result, milk is a heterogeneous mixture because colloidal solutions are heterogeneous in nature.
- Option C, Cheese is an example of gel which is a type of colloid. It has a liquid dispersed phase (water) and a solid dispersion medium (fats).
- Option D, Ice cream is an emulsion, which is a mixture of two liquids that would ordinarily not mix but are spread throughout each other.
Hence Option B, water is a correct option
Water
The explanation for the correct option
Option B, Water
- Water is a compound as it is made up of water molecules in a fixed ratio.
- Water molecules are made up of hydrogen and oxygen atoms in a definite ratio of two hydrogens to one oxygen atom, a 2:1 ratio.
The explanation for incorrect options
- Option A, Milk isn't a pure substance as it is a colloidal solution made up of a blended mixture of lipids, proteins, sugar, and water. As a result, milk is a heterogeneous mixture because colloidal solutions are heterogeneous in nature.
- Option C, Cheese is an example of gel which is a type of colloid. It has a liquid dispersed phase (water) and a solid dispersion medium (fats).
- Option D, Ice cream is an emulsion, which is a mixture of two liquids that would ordinarily not mix but are spread throughout each other.
Hence Option B, water is a correct option
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