Question:
Most commonly used refrigerant in direct immersion freezing of food is
Most commonly used refrigerant in direct immersion freezing of food is
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Liquid nitrogen is ideal for rapid freezing due to its extremely low temperature and quick heat transfer properties.
Updated On: Nov 25, 2025
- Monochlorodifluoromethane
- Dichlorodifluoromethane
- Liquid nitrogen
- Freon
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the question.
Direct immersion freezing involves submerging the food directly into a cold refrigerant. The refrigerant used should be efficient in rapidly reducing the temperature of food.
Step 2: Analyzing the options.
- (A) Incorrect, monochlorodifluoromethane is used as a refrigerant in other applications but not commonly in food freezing.
- (B) Incorrect, dichlorodifluoromethane is not typically used for direct immersion freezing of food.
- (C) Correct, liquid nitrogen is widely used in direct immersion freezing because it has a very low boiling point, allowing for rapid freezing of food.
- (D) Incorrect, Freon is used in refrigeration systems, but it is not typically used for direct immersion freezing of food.
Step 3: Conclusion.
Thus, the correct answer is (C) Liquid nitrogen.
Direct immersion freezing involves submerging the food directly into a cold refrigerant. The refrigerant used should be efficient in rapidly reducing the temperature of food.
Step 2: Analyzing the options.
- (A) Incorrect, monochlorodifluoromethane is used as a refrigerant in other applications but not commonly in food freezing.
- (B) Incorrect, dichlorodifluoromethane is not typically used for direct immersion freezing of food.
- (C) Correct, liquid nitrogen is widely used in direct immersion freezing because it has a very low boiling point, allowing for rapid freezing of food.
- (D) Incorrect, Freon is used in refrigeration systems, but it is not typically used for direct immersion freezing of food.
Step 3: Conclusion.
Thus, the correct answer is (C) Liquid nitrogen.
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