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Metals and Non-Metals — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceMetals and Non-Metals1 Mark
MCQ
An element is soft and can be cut with a knife. It is very reactive and cannot be kept open in the air. It reacts vigorously with water. The element is most likely to be:
  • A
    $\ce{Mg}$
  • B
    $\ce{S}$
  • C
    $\ce{P}$
  • ✓
    $\ce{Na}$
✓

Answer

Correct option: D.
$\ce{Na}$
$\ce{Na}$ is soft and can be cut with a knife. It is very reactive and cannot be kept in open air. It reacts vigorously with water.

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