Multiple Choice Questions on An element A is soft and can be cut with a knife This is very reactive to air and cannot be kept ope........... for 10th Standard Preparation

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Multiple Choice Questions

An element A is soft and can be cut with a knife This is very reactive to air and cannot be kept ope...........

Chemistry Chapter- 3
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    An element A is soft and can be cut with a knife. This is very reactive to air and cannot be kept open in air. It reacts vigorously with water. Identify the element from the following.

    Mg

    Incorrect Answer

    Na

    Correct Answer

    P

    Incorrect Answer

    Ca

    Incorrect Answer
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    Explanation:

    Sodium is a soft, reactive alkali metal.

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