Milk of magnesia is useful for what purpose?
Answer and explanation
Correct answer: Reducing acidity (अम्लता कम करने में)
Milk of magnesia is a suspension of magnesium hydroxide, Mg(OH)₂, which is a weak base. The governing concept is neutralisation: magnesium hydroxide reacts with excess hydrochloric acid in the stomach and reduces its acidity, so it works as an antacid. Therefore option A is correct. Rusting iron, acidifying water and producing litmus are unrelated to the normal function of milk of magnesia.
Frequently asked questions
What is the correct answer to this question?
Reducing acidity (अम्लता कम करने में)
Why is this the correct answer?
Milk of magnesia is a suspension of magnesium hydroxide, Mg(OH)₂, which is a weak base. The governing concept is neutralisation: magnesium hydroxide reacts with excess hydrochloric acid in the stomach and reduces its acidity, so it works as an antacid. Therefore option A is correct. Rusting iron, acidifying water and producing litmus are unrelated to the normal function of milk of magnesia.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: Chemical Substances – Nature and Behaviour. Topic: Acids, Bases, and Salts.
