Metal Elements MCQs with Answers

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Tungsten is the metal used in electric contacts and arc-welding electrodes due to its exceptionally high melting point and excellent electrical conductivity.

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Elemental sodium (Na) is easily oxidized because it readily loses its single valence electron to form Na⁺ ions.

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Barium (Ba) has the highest atomic radius among group 2 elements because atomic radius increases down the group.

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Nickel forms a rose-red precipitate with DMG (dimethylglyoxime), which is a classic confirmatory test for Ni²⁺ ions.

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Alkali and alkaline earth metals cannot be used as electrodes in water-based voltaic cells because of their rapid oxidation.

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Sodium (Na) is the most highly reactive metal among the given options, as it belongs to the alkali metal group which are the most reactive metals.

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Cobalt is a typical transition metal because it is a d-block element that forms coloured compounds and exhibits variable oxidation states.

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Copper was the first metal discovered and used by humans, marking the beginning of the Copper Age (Chalcolithic period).

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Coinage metals are Cu, Ag, Au (Copper, Silver, and Gold).

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Sodium is not found in the natural (free) state because it is a highly reactive alkali metal that readily combines with other elements.