Question

You have prepared four different mixtures in water using : i) charcoal powder ii) chalk powder iii) slaked lime iv) detergent powder If you filter these mixtures through a filter paper, there will be no residue left after filteration in the case of * Detergent powder Charcoal powder Chalk powder milk of magnesia

Answer 1

Option (iv) - There will be no residue left on the filtration paper in case of a detergent powder.

Why does detergent power disappear during the filtration process?

• A detergent is a surfactant or mixture of surfactants and its particles completely dissolve in water.
• When a detergent is dissolved in water and passed through a filtration process, there will be no residue on the paper.
• However, in the case of other substances such as charcoal powder, slaked lime, and chalk powder, the residue will be present on the filtration paper.
• It is because charcoal powder, lime, and slake powder do not dissolve in the water completely, thus residue on the paper.

Thus, option (iv) is correct.

See a similar question here:

What is detergent powder

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Answer 2

Answer:

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