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When does the organic compound be present in the upper solvent layer in differential extraction?

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When does the organic compound be present in the upper solvent layer in differential extraction?

(a) Before the extraction

(b) During the extraction

(c) After the extraction

(d) It is always present in the upper layer

I have been asked this question during an online exam.

I'd like to ask this question from Steam Distillation topic in chapter Methods of Purification of Engineering Chemistry I

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The correct option is (c) After the extraction

Easy explanation: The organic compound is present in the solvent layer after the extraction. Differential extraction refers to the process by which the DNA from two different types of cells can be extracted without mixing their contents

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