An element 'X' reacts with O₂ to give a compound with a high melting point. This compound is also soluble in water. The element 'X' is likely to be:(a) iron (b) calcium (c) carbon (d) silicon

Academic Chemistry NCERT Class 10

Correct answer: (b) Ca

Explanation: Calcium reacts with oxygen to form calcium oxide, with a high melting point, and is soluble in water.

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Updated on: 10-Oct-2022

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