Question

When a drug is extracted by heating at a particular pressure, the process is called
Decoction
Percolation
Digesion
Infusion

Answer 1

When heating extracts a drug at a particular pressure, the process is called Infusion.

In infusion the drug firstly has done powdered, and then the drug is in a suitable vessel which is provided with the cover with 60 ml of cold water and waits for 15 minutes and then adds 900ml boiled water holding the cover of the vessel tightly.

Answer 2

When the drug is extracted by heating at a particular temperature, the process is called infusion.

Infusion is the process of extracting a chemical compounds or flavors from plant material in a solvent such as water, oil or alcohol here it'll be the drug, by allowing the material to remain suspended in the solvent over time. An infusion is also the name for the resultant liquid which is produced.