Which of the following is an ore of aluminium?

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Which of the following metals is not extracted by electrolysis ?

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The following oxides react with both acids and bases to form salts except

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Which of the following is used as water softener?

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Which of the following when heated strongly in air will leave a metal as residue?

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When chlorine is added to slaked lime, the product obtained is

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Which of the substance lettered P to V in the equation below would be left on the filter paper if the reaction mixture were filtered?

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The use of diamond in abrasives is due to its

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Which of the following is used widely in the manufacture of flavours and perfumes?

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Alkanes react with the halogens mainly by

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The by-product of the fermentation of sugar to ethanol is

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Which of the following is the relative molecular mass of a compound which has empirical formula CH2O?

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