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Explain the following: Potassium is st...

Explain the following:
Potassium is stored under kerosene oil.

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Potassium reacts with atmospheric oxygen and moisture.
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ICSE-SPECIMEN PAPER 1-SECTION II
  1. Write equation for each conversion A to E.

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  2. Explain the following: Potassium is stored under kerosene oil.

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  3. Explain the following: Anhydrous iron (III) chloride turns to a solu...

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  4. Explain the following: A solution of CuSO(4) cannot be stored in a p...

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  5. What are the two factors responsible for the liquefaction of gases ?

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  6. At 0^(@) and 760 mm Hg pressure, a gas occupies a volume of 100cm^(3)....

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  7. Draw the structure of ammonia molecule.

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  8. Give the equation for the lab preparation of hydrogen.

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  9. The diagram shows an experimental set up for the laboratory preparatio...

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  10. Why sulphuric acid is not used as a drying agent in the preparation of...

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  11. Give balanced equations to show the preparation of hydrogen by the fol...

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  12. Give balanced equations to show the preparation of hydrogen by the fol...

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  13. Give balanced equations to show the preparation of hydrogen by the fol...

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  14. Give balanced equations to show the preparation of hydrogen by the fol...

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  15. Give balanced equations to show the preparation of hydrogen by the fol...

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  16. Write your observations when dilute sulphuric acid is added to the fol...

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  17. Write your observations when dilute sulphuric acid is added to the fol...

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  18. Write your observations when dilute sulphuric acid is added to the fol...

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  19. Write your observations when dilute sulphuric acid is added to the fol...

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  20. Write balanced equations An acidic oxide reacts with water to give t...

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