Question

Glycerine is used as a preservative for fruits and vegetables because:

• A. it makes them sweet
• B. it acts as an insecticide
• C. it preserves their color
• D. it prevents microbial growth

Hint:

Glycerine prevents microbial growth by reducing water activity in preserved food.

Answer 1

The Correct Option is D

Step 1: Role of glycerine in preservation.
Glycerine acts as a preservative by preventing microbial growth due to its hygroscopic nature, which reduces the water activity in food.
Step 2: Conclusion.
Thus, glycerine is used to prevent microbial growth and extend the shelf life of fruits and vegetables.
Final Answer: \[ \boxed{D} \]