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Write the name and formula of an ore of ...

Write the name and formula of an ore of aluminium.

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Main ore of aluminium - Bauxite - `Al_2 O_3 * 2H_2 O`
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ICSE-SAMPLE QUESTION PAPER 5-Section II
  1. The following table shows the tests a student performed on four differ...

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  2. Name a metal which is found abundantly in the earth's crust.

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  3. State one observation: A zinc granule is added to copper sulphate solu...

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  4. Give reasons why copper is used to make hot water tanks and not steel ...

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  5. Write the name and formula of an ore of aluminium.

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  6. Write the constituents of electrolyte for the extraction of aluminium.

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  7. Which of the following oxides can act as a reducing agent?

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  8. Why is carbon tetrachloride, which is a liquid and non-electrolyte ?

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  9. Why should the temperature of the reaction mixture of nitric acid not ...

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  10. Ammonia not collected over water. Explain

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  11. In the manufacture of sulphuric acid by contact process give the equat...

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  12. Explain the following giving suitable reasons: In the manufacture of H...

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  13. Write balanced chemical equation for the following: NH4 Cl + H2 SO4...

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  14. What happens when (write balanced chemical equations only) Dry chlor...

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  15. Write balanced chemical equations for the Ethanol under high pressur...

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  16. Write balanced chemical equations for each of the following: When ex...

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  17. (i) Write structural formula of the compound formed when one mole of e...

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  18. Fill in the blanks with the correct words from the brackets: Alkenes...

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  19. Write the IUPAC name for the following: CH3- CH= underset(CH3)under...

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  20. Write the IUPAC name for the following: CH3-CH2-overset(O)overset(|...

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