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| Q. |
Which one of the following metals does not react with water to produce Hydrogen ? |
| A. | Potassium |
| B. | Cadmium |
| C. | Sodium |
| D. | Lithium |
| Answer» B. Cadmium | |
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Explanation: Cadmium is a soft, malleable, ductile, bluish-white divalent metal. It is similar in many respects to zinc but forms complex compounds. Unlike other metals, cadmium is resistant to corrosion and as a result it is used as a protective layer when deposited on other metals. As a bulk metal, cadmium is insoluble in water and is not flammable; however, in its powdered form it may burn and release toxic fumes. Cadmium occurs as a minor component in most zinc ores and therefore is a byproduct of zinc production. |
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