Assertion: The collectors used in froth floatation. process help ore particles to pass on into the froth. Reason: The collectors get attached to the polar groups of the grains of mineral and make them water repellent.

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If both Assertion and Reason are CORRECT and Reason is the CORRECT explanation of the Assertion. Explanation: In the froth flotation process, collectors (like xanthates or fatty acids) help the ore particles to attach to the froth and rise to the surface. They do so by attaching to the polar groups of mineral particles, making their surface water-repellent (hydrophobic). Thus, the ore particles preferentially enter the froth while gangue remains wetted by water.

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