Question

In fusion method of effervescent granule preparation, granulation occurs due to _______

• A. Addition of water
• B. Release of water of crystallization from citric acid
• C. Melting of sodium bicarbonate
• D. Carbon dioxide formation

Hint:

In fusion method, citric acid releases water of crystallization, which helps in forming effervescent granules.

Answer 1

The Correct Option is B

Concept:
Effervescent granules contain acid and carbonate or bicarbonate, which produce carbon dioxide when dissolved in water.

Step 1: Fusion method.
In the fusion method, no external water is added. Instead, heat is applied.

Step 2: Role of citric acid.
Citric acid contains water of crystallization. On heating, this water is released.

Step 3: Granulation process.
The released water provides enough moisture to form a wet mass, which helps in granulation.

Step 4: Final answer.
Thus, granulation occurs due to release of water of crystallization from citric acid. \[ \boxed{\text{Release of water of crystallization from citric acid}} \]