Milk of magnesia reduces the effect of what in the stomach?
Answer and explanation
Correct answer: Excess acid
Milk of magnesia is a suspension containing magnesium hydroxide, Mg(OH)₂, a weak base. In the stomach it reacts with excess hydrochloric acid and reduces its acidic effect through neutralisation: Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O. It does not remove excess water, oxygen, or salt. Therefore, option A is correct.
Frequently asked questions
What is the correct answer to this question?
Excess acid
Why is this the correct answer?
Milk of magnesia is a suspension containing magnesium hydroxide, Mg(OH)₂, a weak base. In the stomach it reacts with excess hydrochloric acid and reduces its acidic effect through neutralisation: Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O. It does not remove excess water, oxygen, or salt. Therefore, option A is correct.
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.
