Correct Answer: Water and Pine oil

Key Points

• The froth flotation method is a widely used process for separating valuable minerals from their ores.
• This method relies on the differences in the hydrophobicity of the ore particles.
• Pine oil is commonly used as a frothing agent in this process.
• The ore powder is mixed with water to create a slurry, and the pine oil helps to form froth.
• The hydrophobic particles attach to the air bubbles formed by the froth and rise to the surface, where they can be collected.

Why Other Options Are Wrong

• Water and Aluminum: Aluminum is not used in the froth flotation process; it does not serve as a frothing agent.
• Copper and Water: Copper is a metal and does not act as a frothing agent in the flotation process.
• Water and Vegetable oil: While vegetable oil can be used in some flotation processes, it is not as effective as pine oil for this specific method.

Quick Tip for Exam

Remember that froth flotation primarily uses water and a frothing agent like pine oil to separate ore particles based on their surface properties. Focus on the role of each component in the flotation process.