Question:
What is the air temperature range in air blast freezers ?
What is the air temperature range in air blast freezers ?
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Blast freezers push very cold air over the food. The usual air temperature is between -24 deg C and -40 deg C.
Updated On: Oct 20, 2026
- 0 C to –24 C
- –40 C to –80 C
- 0 C to –40 C
- –24 C to –40 C
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Verified By Collegedunia
The Correct Option is D
Solution and Explanation
Step 1: Understand an air blast freezer:
An air blast freezer blows very cold air at high speed over the food. Food freezes quickly in this strong flow of cold air.
Step 2: Recall the temperature:
The air in such freezers is kept at about -24 deg C to -40 deg C.
This is much colder than a cold store, so the food freezes fast and keeps its quality.
Step 3: Check the other options:
The range 0 deg C to -24 deg C is too warm for fast freezing.
The range -40 deg C to -80 deg C is far too cold for a common blast freezer. It belongs to special deep freezing systems.
The range 0 deg C to -40 deg C is too wide and starts at a temperature where nothing is frozen.
Final Answer:
Air blast freezers work at -24 deg C to -40 deg C. This is option (D).
An air blast freezer blows very cold air at high speed over the food. Food freezes quickly in this strong flow of cold air.
Step 2: Recall the temperature:
The air in such freezers is kept at about -24 deg C to -40 deg C.
This is much colder than a cold store, so the food freezes fast and keeps its quality.
Step 3: Check the other options:
The range 0 deg C to -24 deg C is too warm for fast freezing.
The range -40 deg C to -80 deg C is far too cold for a common blast freezer. It belongs to special deep freezing systems.
The range 0 deg C to -40 deg C is too wide and starts at a temperature where nothing is frozen.
Final Answer:
Air blast freezers work at -24 deg C to -40 deg C. This is option (D).
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