Recent questions in Chapter 8: Metallurgy

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Divide the metals Cu, Zn, Ca, Mg, Fe, Na, Li into three groups, namely reactive metals, moderately reactive metals and less reactive metals.

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Complete the following statement using every given options. During the extraction of aluminium..............

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Zinc oxide is dissolved in dilute hydrochloric acid.

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Electrolysis of alumina is done.

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A reaction was brought about between ferric oxide and aluminium.

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Write chemical equation for the following events. Iron filings are dropped in aqueous solution of copper sulphate

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Write chemical equation for the following events. Aluminium came in contact with air.

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Draw a neat labelled diagram Hydraulic separation method.

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Draw a neat labelled diagram Electrolytic reduction of alumina.

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Draw a neat labelled diagram Froth floatation method.

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Draw a neat labelled diagram Magnetic separation method

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The electronic configuration of metal ‘A’ is 2,8,1 and that of metal ‘B’ is 2,8,2.

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When a copper coin is dipped in silver nitrate solution, a glitter appears on the coin after some time.

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Anodes need to be replaced from time to time during the electrolysis of alumina.

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Pine oil is used in froth flotation.

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Sodium is always kept in kerosene.

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Generally the ionic compounds have high melting points.

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Lemon or tamarind is used for cleaning copper vessels turned greenish.

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Explain the term Gangue

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Explain the term Minerals

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