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Fill in the following blanks with suitable words :
The presence of _________ in sea water makes the process of rust formation on ships faster.

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The correct Answer is:
To fill in the blank in the statement, we need to identify the substance that accelerates rust formation in seawater. 1. **Understanding Rust Formation**: Rust is formed when iron reacts with oxygen and moisture. This process is known as oxidation. 2. **Identifying the Key Component in Seawater**: Seawater contains various dissolved salts, primarily sodium chloride (common salt), which can enhance the conductivity of water and increase the rate of corrosion. 3. **Filling in the Blank**: Given that sodium chloride is a significant component of seawater that contributes to rust formation, we can fill in the blank as follows: The presence of **salt** in seawater makes the process of rust formation on ships faster. Final Answer: The presence of **salt** in seawater makes the process of rust formation on ships faster. ---
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LAKHMIR SINGH & MANJIT KAUR-PHYSICAL AND CHEMICAL CHANGES-EXERCISE
  1. Fill in the following blanks with suitable words : The two methods b...

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  2. Fill in the following blanks with suitable words : The process of de...

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  3. Fill in the following blanks with suitable words : The presence of ...

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  4. Fill in the following blanks with suitable words : Some susbtances c...

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  5. Why is an Iron grill painted frequently ?

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  6. Explain why, iron pipes for carrying water are coated with zinc.

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  7. Why are the tools and machine parts made of iron smeared with grease o...

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  8. Explain how, painting of an Iron gate prevents it from rusting.

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  9. Explain why, rusting of Iron objects is faster in coastal areas than i...

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  10. What is meant by galvanisation? Why is it done?

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  11. State two ways to prevent the rusting of iron.

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  12. What is stainless steel ? How is stainless steel made ? State an impor...

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  13. State three differences between a physical change and a chemical chang...

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  14. Write a word equation to represent the process of rusting of iron. Als...

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  15. Explain why, explosion of a firework (such as cracker) is said to be a...

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  16. Explain why, melting of ice to form water is said to be a physical cha...

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  17. What is meant by crystallisation ? State its one use.

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  18. Describe how, crystals of copper sulphate are prepared.

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  19. Give example of a chemical change which occurs by the action of heat.

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  20. Give example of a physical change which occurs by the action of heat.

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