Which one of the following apparatus is used for separating benzene an

Which one of the following apparatus is used for separating benzene and water mixture ?

Round bottom flask

Conical flask

Separating funnel

Dean and Stark apparatus

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This question was previously asked in

UPSC NDA-1 – 2023

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The correct answer is C) Separating funnel.

A separating funnel is a piece of laboratory glassware used to separate immiscible liquids, i.e., liquids that do not mix and form distinct layers, based on their densities. Benzene and water are immiscible; benzene is less dense than water.

When a mixture of benzene and water is placed in a separating funnel, the two liquids separate into layers (water at the bottom, benzene at the top). The stopper is then opened, and the lower layer (water) is drained out through the stopcock until the interface between the two layers reaches the stopcock. The stopcock is then closed, and the upper layer (benzene) is collected in a separate container. Round bottom flasks and conical flasks are used for mixing, heating, or storage, not for separating immiscible liquids. A Dean and Stark apparatus is used for determining moisture content by distillation.

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