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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.
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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
- The spin only magnetic moment of [CrF₆]⁴⁻ (atomic number for Cr is 24) is
- What is the pH of 0.01 M glycine solution? For glycine, Ka₁ = 4.5 ˣ 10⁻³
- Alkyl halides with metallic sodium in dry ether producing
- In which of the following reaction, the hydrogen peroxide is a reducing agent?
- The de-Broglie wavelength associated with a ball of mass 1kg having kinetic energy
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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