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Name two metals which react vilently wit...

Name two metals which react vilently with cold water. Write any three observations you would make when such a metal is dropped into water. How would you identify the gas evolved, if any during the reaction?

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Sodium and potassium, metal moves over the surface of water causing little explosions and ultimately catches fire and start burning, the gas burns producing a 'pop' sound indicating that it is hydrogen
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LAKHMIR SINGH & MANJIT KAUR-METALS AND NON-METALS-Exercise
  1. Fill in the following blanks with suitable words: (a). Magnesium lib...

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  2. (a). What is meant by saying that the metals are malleable and ductile...

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  3. Name two metals which react vilently with cold water. Write any three ...

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  4. (a). With the help of examples, describe how metals oxides differ from...

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  5. (a). What are amphoteric oxides ? Give two examples of amphoteric oxid...

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  6. (a). What is the neture of the oxide SO(2)? What happens when it is di...

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  7. (a). What is the nature of the oxide SO(2)? What happens when it is di...

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  8. (a). How do metals usually do not liberate hydrogen gas with dilute ni...

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  9. (a). How do non-metals react with hydrogen? Explain with an example. ...

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  10. (a). What happens when calcium reacts with chlorine? Write an equation...

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  11. (a). Arrange the following metals in order of their chemical reactivit...

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  12. A copper plate was dipped in AgNO(3) solutions. After certain time, si...

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  13. State five uses of metals and five of non-metals.

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  14. State one use each of the following metals: Copper, Aluminium, Iron,...

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  15. (a). State one use each of the followign non-metals: Hydrogen, Carbo...

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  16. (a). Why does aluminium not react with water under ordinary conditions...

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  17. (a). Why is sodium kept immersed in kerosene oil ? (b). Why is white ...

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  18. (a). Describe the reaction of potassium with water. Write the equation...

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  19. (a). Give one example, with equation, of the displacement of hydrogen ...

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  20. What is the action of water on (a) sodium (b) magnesium, and (c) alumi...

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