Question:

Which of the following is/are true regarding heating of the concentrate to 70-75°C before atomisation in a spray drier?
A. It facilitates drying by reducing air inlet temperature
B. It saves energy because concentrate heating is more economical
C. This has no effect on solubility of powder
D. It has no effect on microbiological quality of the powder
E. Helps to increase capacity of spray drying plant
Choose the correct answer from the options given below:

Show Hint

Concentrate heating: reduces air temperature, saves energy, increases capacity.
Affects solubility and microbiological quality.
  • (A), (D) and (E) only
  • (B), (C) and (D) only
  • (A), (B) and (E) only
  • (C), (D) and (E) only
Show Solution
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The Correct Option is C

Solution and Explanation

Step 1: Understanding the Concept:
Concentrate heating before atomisation has specific effects.
These effects are important for spray drying.

Step 2: Key Formula or Approach:

No specific formula.
Need to know the effects of concentrate heating.

Step 3: Detailed Explanation:

A. Facilitates drying by reducing air inlet temperature - true.
B. Saves energy - true.
C. Has no effect on solubility - false (affects solubility).
D. Has no effect on microbiological quality - false (affects quality).
E. Increases capacity - true.
Thus, A, B, and E are true.

Step 4: Final Answer:

The true statements are (A), (B), and (E).
Hence, the correct option is (C).
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