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Write the chemical formulae of one main ...

Write the chemical formulae of one main ore of iron and aluminium .

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`"Main ore of iron "rarr" Haematite" - Fe_2O_3`.
`"Main ore of aluminium "rarr" Bauxite" - Al_2O_3.2H_2O`
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ICSE-CHEMISTRY 2011-SECTION-II
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  2. Name the process used for the enrichment of sulphide ore.

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  3. Write the chemical formulae of one main ore of iron and aluminium .

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

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

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

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

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

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

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  10. An organic compound with vapour density = 94 contains C=12.67%, H = ...

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  11. Calcuate the mass of 10^(22) atoms of sulphur. [ Atocmi mass S=32,...

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  12. Calculate the mass of 0.1 mole of carbon dioxide. [Atomic mass : S...

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  13. In the laboratory preparation of hydrochloric acid, HCl gas is dissolv...

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  14. In the laboratory preparation of hydrochloric acid, HCl gas is dissolv...

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  15. In the laboratory preparation of hydrochloric acid, HCl gas is dissolv...

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  16. In the laboratory preparation of hydrochloric acid, HCl gas is dissolv...

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  17. Choose the correct word/phrase from within the brackets to complete th...

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  18. When acetaldehyde is oxidised with acidified potassium dichromate, it ...

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  19. Choose the correct word/phrase from within the brackets to complete th...

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