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Pharmacognosy Chapter 1: Introduction

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Questions and Answers

Which of the following is NOT a factor affecting deterioration of crude drugs under physicochemical factors?

Moisture

Bacteria and Fungi (correct)

Temperature

Light

What is the primary reason for packing crude drugs?

To prevent moisture and light exposure

To improve the quality of drugs on storage

To stop enzymatic activity and retain natural color

To facilitate shipment and protect the drugs (correct)

Which of the following statements about storage of crude drugs is NOT true?

Drugs containing fixed oils cannot become rancid during storage (correct)

The quality of some drugs improves on storage, such as Frangula and Cascara barks

Aromatic drugs containing volatile oils can lose their aroma during storage

Drugs may deteriorate if stored under uncontrolled conditions

What is the purpose of rapid drying of crude drugs?

To prevent decomposition and retain natural color Signup and view all the answers

At what temperature range is enzymatic activity immediately stopped during rapid drying of crude drugs?

$55^\circ\text{C} - 70^\circ\text{C}$ Signup and view all the answers

Which of the following drugs may lose their activity during storage?

Digitalis leaves Signup and view all the answers

What is the potential issue with aromatic drugs containing volatile oils during storage?

They may lose their aroma Signup and view all the answers

Which of the following is NOT listed as a biological factor affecting deterioration of crude drugs?

Light Signup and view all the answers

What is the term used in the text to refer to the addition of inferior or foreign substances to crude drugs?

Adulteration Signup and view all the answers

Which of the following is NOT mentioned as a method of drying crude drugs in the text?

Oven drying Signup and view all the answers