Which physical method is most suitable for separating a mixture of steel ball bearings and marbles?

• A. Distillation
• B. Filtration
• C. Manual separation
• D. Evaporation

Answer: (C)

Verified step by step guidance

1. Identify the physical properties of the components in the mixture: steel ball bearings and marbles are both solid objects that differ in size, shape, or material but are not dissolved in a liquid.
2. Understand that distillation and evaporation are separation techniques used for mixtures involving liquids and dissolved substances, so they are not suitable for separating solid objects like ball bearings and marbles.
3. Recognize that filtration is used to separate solids from liquids or different sized particles suspended in a liquid, which does not apply here since both components are solid and not suspended in a liquid.
4. Consider manual separation, which involves physically picking apart or sorting the components based on their visible differences such as size, shape, or material, making it the most straightforward and effective method for this mixture.
5. Conclude that manual separation is the most suitable physical method for separating steel ball bearings and marbles because it directly exploits their physical differences without requiring complex equipment or processes.