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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: - A substance with initial concentration of a mol dm⁻³ follows zero order kinetics.
- Calculate the energy in joule corresponding to light of wavelength 45nm
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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
- A substance with initial concentration of a mol dm⁻³ follows zero order kinetics.
- Calculate the energy in joule corresponding to light of wavelength 45nm
- Among the elements Ca, Mg, P and Cl, the order of increasing atomic radii is :
- Empirical formula of a compound is CH₂O.If its molecular weight is 180,
- Among the following the compound that is readily soluble in water is
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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