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Food Preservation and Vacuum Packing

1 UPSC Prelims MCQs tagged "Food Preservation and Vacuum Packing". Free practice with answer keys, explanations, and timed mock tests on Anantam IAS.

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Consider the following statements regarding the scientific aspects of vacuum packing:
Consider the following statements regarding the scientific aspects of vacuum packing:
1. AOnly 1 and 2
2. BOnly 2 and 3
3. COnly 1 and 3
4. D1, 2 and 3
Answer and explanation
Correct answer: B
Statement 1 is wrong because humidity and moisture do affect vacuum-packed food, influencing texture and microbial activity. Statement 2 is correct, since removing oxygen slows oxidation reactions that cause spoilage and rancidity. Statement 3 is also correct, as anaerobic microorganisms can still grow in low-oxygen vacuum conditions, which is why refrigeration is still needed.
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Science & Technology UPSC GPSC-2026 Medium