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Question

Vacuum packaging extends the shelf life of perishable foods by creating _____ environment.

This question was previously asked in
UPTET 2026 Paper 2 Social Studies Question Paper (3-Jul-2026) (Shift 1)
The correct answer is

Oxygen-free environment

Vacuum packaging works by removing air from around the food before sealing it in an airtight package.

This process eliminates most of the oxygen present, creating an oxygen-free environment that slows down the growth of aerobic bacteria, mould, and yeast, as well as reducing oxidative spoilage reactions.

A high-temperature environment or sunlight exposure would instead accelerate spoilage, and a carbon-dioxide-rich environment describes modified atmosphere packaging rather than vacuum packaging specifically.

Therefore, vacuum packaging extends shelf life by creating an Oxygen-free environment.

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