Which row describes the method used to obtain salt from salt water and petrol from petroleum?
1 )
salt from salt water: crystallisation / petrol from petroleum: distillation
salt from salt water: crystallisation / petrol from petroleum: fractional distillation
3 )
salt from salt water: filtration / petrol from petroleum: distillation
4 )
salt from salt water: filtration / petrol from petroleum: fractional distillation
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