Food Preservation
Telangana Open School (TOSS) · Class 12 · Community Science (Home Science)
Most important questions from Food Preservation for Telangana Open School (TOSS) Class 12 Community Science (Home Science) board exam 2026. MCQs, short answer, and long answer questions with marks.
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Sample Questions
Pasteurization involves heating milk to:
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71.5°C for 15 seconds
High-temperature short-time (HTST) pasteurization heats milk to 71.5°C for 15 seconds to destroy pathogens while preserving quality.
Which method removes water from food to prevent microbial growth?
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Drying
Drying or dehydration removes water, which is essential for microbial growth, thus preserving food.
Which of the following is a natural preservative?
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Vinegar
Vinegar is a natural preservative made by fermentation and commonly used in pickling.
Which gas is used in modified atmosphere packaging to inhibit microbial growth?
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Carbon dioxide
CO₂ inhibits the growth of many microorganisms and is used in modified atmosphere packaging (MAP).
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