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Preservation of Food — Flashcards

NIOS · Class 10 · Home Science

34 flashcards for Preservation of Food (NIOS Class 10 Home Science) to test yourself on key terms and facts. Sample: "What is food spoilage?"

45 questions34 flashcards3 formulas & key relations5 concepts

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34 Flashcards·
Food spoilageCauses of spoilageMoisture and spoilageRoom temperature spoilageFood conditionsEnzymesEnzyme spoilage exampleFood storage
Card 1Food spoilage

What is food spoilage?

Answer

Food spoilage means food is no longer fit for eating. It may change colour, give off a bad smell, show fermentation with bubbles, grow mould, or develop soft brown spots on fruits and vegetables.

Card 2Causes of spoilage

What are the main causes of food spoilage?

Answer

The main causes are micro-organisms, enzymes, insects, worms, and rats. Micro-organisms and enzymes are the most important causes in food preservation.

Card 3Moisture and spoilage

Why does tomato spoil faster than potato?

Answer

Tomato has more moisture content than potato. Micro-organisms grow more easily in moist food, so tomato spoils faster.

Card 4Room temperature spoilage

Why does spinach kept at room temperature become yellow and stale?

Answer

At room temperature, conditions are suitable for micro-organisms and natural spoilage processes to act quickly. Spinach then turns yellow and stale.

Card 5Food conditions

Why do foods with low salt, sugar, or acid spoil more easily?

Answer

Low salt, sugar, or acid content gives a better environment for micro-organisms to grow. Foods such as pickles and fruit jam need preservation to stop this growth.

Card 6Enzymes

How do enzymes cause food spoilage?

Answer

Enzymes are chemical substances found in all plants and animals. They help fruits and vegetables ripen, but continued action makes food soft, causes black spots, and gives a bad smell.

Card 7Enzyme spoilage example

What happens when a ripe mango is left for several more days?

Answer

It becomes soft, develops black spots, and gives off a bad smell. This happens because of continued enzyme action.

Card 8Food storage

What is food storage?

Answer

Food storage means keeping food in a special place until it is needed for consumption.

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Frequently Asked Questions

What are the important topics in Preservation of Food for NIOS Class 10 Home Science?
Key topics in Preservation of Food include Food Spoilage and Shelf Life, Principles and Methods of Food Preservation, Preservatives and Dehydration, Hygiene and Safe Handling of Stored Food. Study these first, then practise questions on each for the NIOS Class 10 board exam.
How many flashcards are available for Preservation of Food?
There are 34 flashcards for Preservation of Food covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Preservation of Food for the NIOS Class 10 board exam?
Learn the core ideas first, then work through the 45 practice questions on Preservation of Food. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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All NIOS Class 10 Home Science Flashcards

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