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Q104
(NDA-I/2024)
Science & Technology › Basic Science (Physics, Chemistry, Biology)
Official Key
Which one among the following is known as Milk of Magnesia ?
Explanation
Milk of Magnesia is the common name for Magnesium hydroxide, which has the chemical formula Mg(OH)2. It is an inorganic compound that is widely used in medicine and industry.
- Appearance: It gets its name from its milk-like appearance when prepared as an aqueous suspension.
- Medical Applications: It is primarily used as an antacid to neutralize excess stomach acid, providing relief from heartburn and indigestion. It also acts as a laxative to treat occasional constipation by drawing water into the intestines.
- Chemical Nature: It is a weak base. When it reacts with the hydrochloric acid in the stomach, it undergoes a neutralization reaction to form magnesium chloride and water.
In contrast, Magnesium sulphate is known as Epsom salt, and Magnesium carbonate is often used as a drying agent or in antacids but is not referred to as Milk of Magnesia.
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