Question

Heat-sensitive materials with high heat of vaporization may be economically separated using:

• A. \(\text{Liquid extraction}\)
• B. \(\text{Distillation}\)
• C. \(\text{Evaporation}\)
• D. \(\text{Adsorption}\)

Hint:

For heat-sensitive materials, low-temperature evaporation techniques like vacuum evaporation are used.

Answer 1

The Correct Option is C

Step 1: Understanding heat-sensitive separation techniques. - Evaporation allows gentle removal of solvents, minimizing thermal degradation. 
Step 2: Explanation of incorrect options. 
- (A) Liquid extraction: Useful for separation but not for heat-sensitive materials. 
- (B) Distillation: Requires higher temperatures, which can degrade heat-sensitive substances. 
- (D) Adsorption: Used for gas separations and purifications, not for high heat of vaporization. 
Step 3: Selecting the correct option. Since evaporation minimizes thermal damage, the correct answer is (C) Evaporation.