Food Preservation — Important Questions
Telangana Open School (TOSS) · Class 12 · Community Science (Home Science)
45 important questions from Food Preservation for Telangana Open School (TOSS) Class 12 Community Science, with answers. Written for the board exams 2027.
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Important Questions from Food Preservation
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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Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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