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Chromatography
Lower Sec Science · Secondary 1 · Hard · Chromatography
In a chromatography experiment, the start line is drawn on the paper. Why must the start line be drawn in pencil instead of ink?
- Pencil is easier to see than ink.
- Pencil will not dissolve in the solvent.
- Ink is too expensive to use.
- Ink makes the paper heavier.
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