CH-1387
Separation and purification
Chemistry · Secondary 4 · Medium · Separation and purification
A solution contains a mixture of sodium chloride and sand.
Which sequence of steps will obtain pure dry sodium chloride?
1 filter
2 evaporate filtrate to dryness
3 add water
4 decant liquid from solid
Which sequence of steps will obtain pure dry sodium chloride?
1 filter
2 evaporate filtrate to dryness
3 add water
4 decant liquid from solid
- 3, 4, 1, 2
- 3, 2, 1, 4
- 1, 3, 4, 2
- 4, 3, 1, 2
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