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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.
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संबंधित प्रश्न
What is an alloy?
With the help of labelled diagrams, describe an activity to find out the conditions under which iron rusts.
Write scientific reasons.
Lemon or tamarind is used for cleaning copper vessels turned greenish.
Choose the correct alternative and rewrite the following:
Iron is _____________________.
To prevent corrosion of iron and steel _______ method is used.
Write the name.
An alloy of copper and tin-
Observe the following figure and write the answer of the question.
- Which process is shown in the figure?
- Explain the chemical reaction shown in the figure.
- Write the reactions on anode and cathode.
Give the equation for the formation of rust.
Which among the following alloys contain mercury as one of its constituents?
Gold plated ornaments is the example of ______.
