Which of the following compounds is used as an antacid?

This question was previously asked in
RRB Technician Grade III Official Paper (Held On: 30 Dec, 2024 Shift 1)
View all RRB Technician Papers >
  1. Sodium chloride
  2. Magnesium hydroxide
  3. Calcium oxide
  4. Calcium hydroxide

Answer (Detailed Solution Below)

Option 2 : Magnesium hydroxide
Free
General Science for All Railway Exams Mock Test
2.2 Lakh Users
20 Questions 20 Marks 15 Mins

Detailed Solution

Download Solution PDF

The correct answer is Magnesium hydroxide.

Key Points

  • Magnesium hydroxide is commonly used as an antacid to neutralize stomach acid and relieve indigestion and heartburn.
  • It is often referred to as "milk of magnesia" due to its milky appearance.
  • Magnesium hydroxide works by neutralizing hydrochloric acid in the stomach, thereby increasing the pH level and reducing acidity.
  • It is also used as a laxative to relieve constipation by drawing water into the intestines and promoting bowel movements.

Additional Information

  • Antacids:
    • Antacids are substances that neutralize stomach acidity and are used to relieve heartburn, indigestion, or an upset stomach.
    • Common active ingredients include magnesium hydroxide, aluminum hydroxide, calcium carbonate, and sodium bicarbonate.
    • Antacids provide quick relief from symptoms but do not heal the underlying cause of acid-related conditions.
  • Mechanism of Action:
    • Antacids work by neutralizing the excess hydrochloric acid in the stomach, which increases the pH level and reduces acidity.
    • This action provides relief from pain and discomfort caused by acid reflux and indigestion.
  • Other Uses of Magnesium Hydroxide:
    • Besides being an antacid, magnesium hydroxide is also used as a laxative to treat constipation.
    • It works by drawing water into the intestines, which helps to soften stools and stimulate bowel movements.
  • Safety and Side Effects:
    • Common side effects of magnesium hydroxide include diarrhea, cramping, and an imbalance in electrolytes if used excessively.
    • Patients with kidney disease should use magnesium hydroxide with caution due to the risk of magnesium accumulation.
Latest RRB Technician Updates

Last updated on Jul 16, 2025

-> The Railway RRB Technician Notification 2025 have been released under the CEN Notification - 02/2025.

-> As per the Notice, around 6238 Vacancies is  announced for the Technician 2025 Recruitment. 

-> A total number of 45449 Applications have been received against CEN 02/2024 Tech Gr.I & Tech Gr. III for the Ranchi Region.

-> The Online Application form for RRB Technician is open from 28th June 2025 to 28th July 2025. 

-> The Pay scale for Railway RRB Technician posts ranges from Rs. 19900 - 29200.

-> Prepare for the exam with RRB Technician Previous Year Papers.

-> Candidates can go through RRB Technician Syllabus and practice for RRB Technician Mock Test.

Get Free Access Now
Hot Links: teen patti octro 3 patti rummy teen patti all app teen patti master real cash teen patti all