B. State whether the following statements are true or false. Rewrite the correctly.
1. Lead forms a green deposit of acidic lead carbonate on exposure to moist air.
2. Rusting is a slow process.
3. The rate of rusting decreases with an increase of acidic gases.
4. Rusting makes iron objects weak and useless.
1. Lead forms a green deposit of acidic lead carbonate on exposure to moist air.
2. Rusting is a slow process.
3. The rate of rusting decreases with an increase of acidic gases.
4. Rusting makes iron objects weak and useless.
Answers & Comments
Verified answer
Answer:
1. False
2. True
3. False
4. True
Explanation:
1. False. Because when lead is exposed with air, lead oxide is formed which is of full colour ( red/ brown).
2. True. Rust occurs on iron when it comes in contact of air. Rusting is the corrosion of iron metal. It is caused due to oxidation.
3. False. Because acidic gases increase the rate of oxidation and Hence increase the rate of rusting.
4. True. Because rusting is the slow eating up of iron materials.
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