Name the technique to separate:
1 Various constituents of petroleum
2 Crystals of alums from impure samples
3 Colours in a dye
4 Drugs from blood
5 Cream from milk
6 Sodium chloride from its solution in water
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3rd answer is chromatography
4th answer is chromatography
5th answer is centrifugation
4th answer is chromatography
5th answer is centrifugation
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