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Why is sodium kept immersed in kerosene ...

Why is sodium kept immersed in kerosene oil?

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Sodium is high reactive element. If it is kept in open it can explosively react with oxygen to catch fire.
Hence to prevent accidental damage sodium is immersed in kerosene oil.
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Give an example of a metal which (i) is a liquid at room temperature. (ii) is kept immersed in kerosene for storing. (iii) is both malleable and ductile. (iv) is the best conductor of heat.

NCERT-METALS AND NON-METALS-Exercise
  1. Give an example of a metal which (i) is a liquid at room temperatur...

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  2. Explain the meanings of malleable and ductile.

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  3. Why is sodium kept immersed in kerosene oil?

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  4. Write equations for the reactions of (i) iron with steam (ii) calc...

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  5. Samples of four metals A, B, C and D were taken and added to the follo...

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  6. Which gas is produced when dilute hydrochloric acid is added to a reac...

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  7. What would you observe when zinc is added to a solution of iron (II) s...

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  8. (i) Write the electron-dot structures for sodium, oxygen and magnesium...

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  9. Why do ionic compounds have high melting points?

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  10. Define the following terms. (i) Mineral (ii) Ore (iii) Gangue

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  11. Name two metals which are found in nature in the free state.

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  12. What chemical process is used for obtaining a metal from its oxide?

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  13. Metallic oxides of zinc, magnesium and copper were heated with the fol...

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  14. Which metals do not corrode easily?

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  15. What are alloys?

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  16. Which of the following pairs will give displacement reactions? (i) Na...

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  17. Which of the following methods is suitable for preventing an iron fryi...

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  18. An element reacts with oxygen to give a compound with a high melting p...

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  19. Food cans are coated with tin and not with zinc because (a) zinc is ...

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  20. You are given a hammer, a battery, a bulb, wires and a switch. (a) H...

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