Question

Match List I with List II:

List I (Mixture)		List II (Separation Technique)
A	CHCl3​+C6​H5​NH2​	i	Steam distillation
B	C6​H14​+C5​H12​	ii	Differential extraction
C	C6​H5​NH2​+H2​O	iii	Distillation
D	Organic compound in H2​O	iv	Fractional distillation

• A. A-IV, B-I, C-III, D-II
• B. A-III, B-IV, C-I, D-II
• C. A-II, B-I, C-III, D-IV
• D. A-III, B-I, C-IV, D-II

Answer 1

The Correct Option is B

To solve this question, we need to match the list of mixtures with their appropriate separation techniques based on their chemical properties and the methods commonly used in chemistry:

1. CHCl₃ + C₆H₅NH₂: Chloroform (CHCl₃) and aniline (C₆H₅NH₂) can be separated by distillation because these two components have different boiling points and distillation is an ideal method for separating mixtures of liquids that do not react with each other. Hence, the correct technique is Distillation.
2. C₆H₁₄ + C₅H₁₂: Hexane (C₆H₁₄) and pentane (C₅H₁₂) are hydrocarbons that are similar in chemical composition but differ slightly in boiling points. Therefore, the best method to separate them is Fractional distillation.
3. C₆H₅NH₂ + H₂O: Aniline (C₆H₅NH₂) and water (H₂O) form a mixture where aniline can be separated from water using Steam distillation due to aniline's high boiling point and its tendency to form an azeotrope with water.
4. Organic compound in H₂O: Separation of an organic compound from water is effectively done by Differential extraction. This technique exploits the preferentially solubility of the organic compound in an organic solvent compared to water.

Based on these optimal separation techniques, the correct matches are:

• A. CHCl₃ + C₆H₅NH₂ - III: Distillation
• B. C₆H₁₄ + C₅H₁₂ - IV: Fractional Distillation
• C. C₆H₅NH₂ + H₂O - I: Steam Distillation
• D. Organic compound in H₂O - II: Differential Extraction

Thus, the correct option is: A-III, B-IV, C-I, D-II.