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Magnesium does not decompose in
Options
(a) steam
(b) hot water
(c) cold water
(d) semi-hot water
Correct Answer:
cold water
Explanation:
Magnesium has a very slight reaction with cold water. The reaction soon stops because the magnesium hydroxide formed is almost insoluble in water and forms a barrier on the magnesium preventing further reaction. Mg + 2H₂O → Mg(OH)₂ + H₂.
Related Questions: - 20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide
- Oxidation number of chromium in Na₂Cr₂O₇ is
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Topics: S and Some P Block Elements
(157)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- 20.0 g of a magnesium carbonate sample decomposes on heating to give carbon dioxide
- Oxidation number of chromium in Na₂Cr₂O₇ is
- Which one of the following does not correctly represent the correct order
- All Cu(II) halides are known except the iodide. The reason for it is that
- The isotopes of elements were discovered by
Topics: S and Some P Block Elements (157)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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