Briefly describe the principles of the followig techniques, taking an example in each case.
Distillation under reduced pressure

Briefly describe the principles of the followig technique, by taking an example. Simple distillation

Briefly describe the principles of the followig techniques, taking an example in each case. Paper chromatography

Briefly describe the principles of the followig technique, by taking an example. Crystallization

Give the chemistry behind distillation under reduced pressure.

Describe the principle of extraction of each of the following (b) Zn from Zn O

Organic compounds have to be purified before analysis. Which type of liquids can be purified using distil lation under reduced pressure? Suggest an example.

Briefly explain different types of neutrologically active drugs and give example for each type.

Briefly explain the dlfferents types of emulsions and give example for each.

What is the difference between distillation, dístillation under reduced pressure and steam distillation?