An element 'X ' reacts with O_2 to give a compound with a high me… - Vidyadip

MCQ

An element $'X\ '$ reacts with $\mathrm{O}_2$ to give a compound with a high melting point. This compound is also soluble in water. The element $'X\ '$ is likely to be :

✓
Iron.
B
Calcium
C
Carbon.
D
Silicon.

✓

Answer

Correct option: A.

Iron.

Calcium Oxide is formed when Calcium reacts with Oxygen.
But In certain cases, Silicon Dioxide may also be possible $($Because its solubility depends on its crystalline structure$).$

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