One of the following is a medicine for indigestion. This is:(a) Sodium hydroxide
(b) Manganese dioxide
(c) Magnesium hydroxide
(d) Potassium hydroxide

Correct Answer: (c) Magnesium hydroxide.

Explanation: Magnesium hydroxide acts as antacid and prevents indigestion. As it is basic in nature and neutralizes the excess acid formed in the stomach.