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Match the pairs. Group ‘A’ Group ‘B’ a. C2 H6 1. Unsaturated hydrocarbon

asked Oct 10, 2021 in Chapter 9: Carbon Compounds by Doubtly (98.9k points)

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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.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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Zinc oxide is dissolved in dilute hydrochloric acid.

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Electrolysis of alumina is done.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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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

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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Draw a neat labelled diagram Hydraulic separation method.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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Draw a neat labelled diagram Electrolytic reduction of alumina.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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Draw a neat labelled diagram Froth floatation method.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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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.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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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.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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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.

asked Oct 9, 2021 in Chapter 8: Metallurgy by Doubtly (98.9k points)

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Explain the term Gangue

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