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CHETAN PUBLICATION-METALLURGY-ANSWER THE FOLLOWING IN ONE OR TWO SENTENCES,
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- What is concentration of ore ?
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- Name the two properties on which Froth flotation method is based.
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- Froth floatation method.
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- explain Magnetic Separation
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- Write the equation for the action of heat on aluminium hydroxide.
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- What is the purpose of roasting in metallurgy ?
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- Write the cathode reaction in electrolytic reduction of alumina.
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- What work as a electrolyte in Hall's cell ?
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- The reactivity of metals increase down to reactivity series.
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- How oxides of metals are reduced by hydrogen ?
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- State the chemical composition of Bauxite.
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- State the chemical composition of Bauxite.
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- What do you mean by amphoteric oxides ?
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- react with dil. HNO(3) to evolve hydrogen gas.
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