Here are 10 One-Word Answer Type Questions from the topic Rusting of Iron (from your provided PDF), with answers and explanations after each question as requested:
One-Word Answer Type Questions
Topic: Rusting of Iron
1. Question: What is the brown flaky substance formed on iron called?
• Answer: Rust
• Explanation: Rust is the brown substance formed when iron reacts with oxygen and moisture.
2. Question: Rusting of iron is an example of which type of change?
• Answer: Chemical
• Explanation: Rusting is a chemical change because a new substance is formed.
3. Question: Which gas is essential for rusting of iron?
• Answer: Oxygen
• Explanation: Oxygen from the air reacts with iron and water to form rust.
4. Question: Presence of what substance along with oxygen causes rusting?
• Answer: Water
• Explanation: Water or moisture is necessary for rusting of iron.
5. Question: What is the chemical formula of rust?
• Answer: Fe2O3
• Explanation: Rust is chemically known as iron oxide, with the formula Fe2O3.
6. Question: What is the process of iron reacting with oxygen and water called?
• Answer: Rusting
• Explanation: Rusting is the slow chemical reaction of iron with oxygen and moisture.
7. Question: What is the preventive coating applied on iron to avoid rusting?
• Answer: Paint
• Explanation: Paint is applied to iron surfaces to prevent exposure to air and moisture.
8. Question: What is the process of depositing zinc on iron to prevent rusting?
• Answer: Galvanisation
• Explanation: Galvanisation is the process of coating iron with zinc to prevent rusting.
9. Question: What term is used for a layer of zinc applied on iron?
• Answer: Coating
• Explanation: A protective coating of zinc prevents rusting.
10. Question: Which weather condition increases rusting?
• Answer: Humid
• Explanation: Humid conditions increase the rate of rusting due to more moisture in the air.
If you want, I can now prepare the next set from the topic Crystallisation in the same one-word format.
Shall I proceed?
