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Match the atomic number 4, 14, 8, 15 and...

Match the atomic number 4, 14, 8, 15 and 19 with of the following:
A non-metal of valency 4.

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Match the atomic number 2, 4, 8, 15 & 19 with each of the following - i] A solid non-metal belonging to the third period. ii] A metal of valency 1. iiiA gaseous element with valency 2 iv] An element belong ing to Group 2. v] A rare gas.

ICSE-SPECIMEN PAPER 1-SECTION II
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  2. Write equation for each conversion A to E.

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

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

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

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

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

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  8. Draw the structure of ammonia molecule.

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

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

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

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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. Give balanced equations to show the preparation of hydrogen by 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 your observations when dilute sulphuric acid is added to the fol...

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

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