Household Equipment, Selection & Care — Flashcards
Telangana Open School (TOSS) · Class 12 · Community Science (Home Science)
38 flashcards for Household Equipment, Selection & Care (Telangana Open School (TOSS) Class 12 Community Science) to test yourself on key terms and facts.
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What are two common forms of aluminum utensils and how are they made?
Answer
Stamped and cast aluminum utensils. Stamped utensils are made by pressing aluminum sheets into shape under high pressure. Cast utensils are made by pouring molten aluminum into molds.
Why should salt or soda not be used to clean aluminum utensils?
Answer
Salt and alkali like soda react with aluminum, causing it to darken and get damaged over time. This chemical reaction weakens the metal surface.
How can stains be removed from aluminum utensils?
Answer
Boil apple peelings in water inside the utensil to loosen stains. For polishing, use whiting. For greasy vessels, soak in hot water and wash with soapy water using steel wool or coconut fiber.
Why is stainless steel preferred for kitchen sinks and countertops?
Answer
Stainless steel is strong, corrosion-resistant, easy to clean, and durable. It resists rust and damage from food acids and alkalis, making it ideal for wet areas.
How do you remove tough stains from stainless steel vessels?
Answer
Add vinegar to water, boil it in the vessel for about 30 minutes. This loosens the stains. Then scrub gently, rinse with cold water, and dry with a cloth.
Why should pumice stone not be used on stainless steel?
Answer
Pumice stone is abrasive and can scratch the smooth surface of stainless steel, making it harder to clean and less attractive.
What causes iron utensils to rust?
Answer
Rust forms when iron is exposed to moisture and oxygen. The chemical reaction produces red iron oxide, which weakens the metal.
How should iron utensils be cleaned and protected from rusting?
Answer
Remove grease with waste paper, scrub with steel wool and wood ash in soapy water, rinse, dry, and apply a thin layer of oil to prevent rusting.
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