A filtration process could be very time consuming if it were not aided by a gentle suction, which is developed:
Correct answer: C. If the paper fits tightly
- A. If the stem of the funnel is large so that it dips into the filtrate
- B. If the paper covers the funnel up to its circumference
- C. If the paper fits tightly
- D. If the paper has got small sized pores in it
Explanation
During filtration, a tight-fitting filter paper prevents the liquid from bypassing the paper around the edges. This ensures all the liquid passes through the paper, maintaining suction efficiency.A proper fit reduces filtration time and prevents loss of solid.
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About Experimental Techniques in Chemistry
Separation methods are selected according to differences in solubility, particle size, volatility and sublimation behaviour. Filtration and crystallisation separate insoluble or dissolved solids, sublimation isolates suitable volatile solids, distillation separates liquids by boiling point, and solvent extraction transfers a substance between immiscible solvents.
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