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Methods used for purification of organic compounds are based on : (1) neither on nature of compound nor on the impurity present. (2) nature of compound only. (3) nature of compound and presence of impurity. (4) presence of impurity only.

1. (1)
2. (2)
3. (3)
4. (4)

Correct answer: (3)

Solution

Purification methods are designed to effectively separate organic compounds based on their specific properties and the characteristics of the impurities present, making both factors crucial for selecting the appropriate technique.

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