JEE MAIN - Chemistry (2019 - 10th January Morning Slot - No. 19)
If dichloromethane (DCM) and water (H2O) are used for differential extraction, which one of the following statements is correct ?
DCM and H2O would stay as upper and lower layer respectively in the separating funnel (S.F.)
DCM and H2O will make turbid/colloidal mixture
DCM and H2O would stay as lower and upper layer respectively in the separating funnel(S.F).
DCM and H2O will be miscible clearly
Explanation
Density of DCM = 1.39 and density of H2O = 1.0.
Dichloromethane (DCM) is a denser solvent than water. Therefore, when a mixture of DCM and water is allowed to settle in a separating funnel, the DCM forms the lower layer due to its higher density, while the water forms the upper layer. The two solvents are immiscible, meaning they do not mix and form two distinct layers.
So, the correct answer is :
Option C : DCM and H2O would stay as lower and upper layer respectively in the separating funnel(S.F).
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