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Which of the ...

Question

Which of the following is present in milk of magnesia?
(a) magnesium dioxide
(b) magnesium hydroxide
(c) magnesium chloride
(d) magnesium oxide

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Solution

(b) magnesium hydroxide

Magnesium hydroxide is present in milk of magnesia.

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Q. When water is added to magnesium oxide ,magnesium hydroxide is produced which is also present in lime water .So, is it correct that the magnesium hydroxide present in lime water and the magnesium hydroxide formed from magnesium oxide and water are one and the same?

Q. Magnesium oxide is produced by the calcination of magnesium phosphate or magnesium sulphate by the treating magnesium chloride with lime followed by heat.

Q. Write the formulae of the following compounds, showing the steps involved.

(a) sodium oxide
(b) magnesium nitrate
(c) magnesium sulphate
(d) aluminium chloride

Q. Find the oxidation number of Magnesium in Magnesium chloride.

Q. Which of the following represents a correct chemical reaction?
(a) nitrogen + oxygen ⟶ hydrogen oxide
(b) carbon + chlorine ⟶ potassium chloride
(c) sulphur + oxide ⟶ sulphur dioxide
(d) sodium + chlorine ⟶ magnesium chloride

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