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प्रश्न
Describe two changes that are harmful. Explain why you consider them harmful. How can you prevent them?
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उत्तर
1. Rusting of Iron:
- Why Harmful: Rusting weakens iron and steel structures, leading to potential failures and increased maintenance costs.
- Prevention: Apply protective coatings like paint or use galvanization (coating with zinc) to prevent exposure to moisture and oxygen.
2. Food Spoilage:
- Why Harmful: Spoiled food can cause food poisoning and waste valuable resources.
- Prevention: Store food properly in cool, dry places, use refrigeration, and adhere to proper hygiene practices to slow down spoilage.
संबंधित प्रश्न
What is an alloy?
What is anodising? Give its applications.
Fill in the following blank with suitable word:
The corrosion of iron is called ................
What are the special properties of stainless steel?
Pressure cooker : Anodizing : : Silver plated spoons : _______
Write scientific reason.
On exposure to air, silver articles turn blackish after some time.
Galvanisation is a method of protecting iron from rusting by coating it with a thin layer of ____________.
Amalgam is an alloy of ____________.
Gold plated ornaments is the example of ______.
Give scientific reasons.
Silver amalgam is used for filling dental cavities.
