Question:
A metal reacts with oxygen to form a compound with a high melting point. This compound is soluble in water. Which of the following elements can it be?
A metal reacts with oxygen to form a compound with a high melting point. This compound is soluble in water. Which of the following elements can it be?
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Calcium oxide, also known as quicklime, is widely used in the construction industry and for neutralizing acids.
Updated On: Oct 27, 2025
- Silicon
- Carbon
- Calcium
- Iron \bigskip
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The Correct Option is C
Solution and Explanation
Calcium reacts with oxygen to form calcium oxide (CaO), which has a high melting point and is soluble in water, forming calcium hydroxide (Ca(OH)$_2$).
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