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Give reasons for the following: A mol...

Give reasons for the following:
A molecule of ammonia has one lone pair of electrons.

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ICSE-MODEL PAPER-2-SECTION-II
  1. State the inference drawn from the following observations: A salt ...

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  2. A gas 'Z' which changes the colour of KMnO4 solution and of lead aceta...

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  3. Give reasons for the following: A molecule of ammonia has one lone ...

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  4. Give reasons for the following: The bond formed between the oxygen...

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  5. Give reasons for the following: Electrovalent & polar covalent co...

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  6. Name the following: The chemical name of the principal ore of alum...

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  7. Name the following: An alkaline earth metal in period 3 of the per...

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  8. Name the following: A gas other than oxygen obtained at the anode ...

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  9. Select the correct property of sulphuric acid from A to D, which relat...

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  10. Select the correct property of sulphuric acid from A to D, which relat...

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  11. Select the correct property of sulphuric acid from A to D, which relat...

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  12. Give balanced equations for the preparation of the following salts: ...

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  13. Give balanced equations for the preparation of the following salts: ...

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  14. Give balanced equations for the preparation of the following salts: ...

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  15. What is meant by the term 'Molar volume'.

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  16. A flask 'A' holds 2.8kg. of hydrogen at s.t.p. Calculate the weight...

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  17. Calculate if 1 mole of a diatomic gas 'X2' will occupy a higher volume...

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  18. Differentiate between the following: Oxidising electrode and reduci...

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  19. Differentiate between the following: Ionisation energy and electron...

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  20. Differentiate between the following: Roasting and calcination of an...

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