Which of these are known as antacids?

Sodium hydrogen carbonate

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Magnesium hydroxide

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Calcium carbonate

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Hydrochloric acid

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Solution

The correct options are
A Sodium hydrogen carbonate
B Magnesium hydroxide
C Calcium carbonate
An antacid is a substance which neutralizes stomach acidity, used to relieve heartburn, indigestion or an upset stomach.When excessive amount of acids are produced in the stomach the natural mucous barrier that protects the lining of the stomach can damage the esophagus in people with acid reflux. Antacids contain alkaline ions that chemically neutralize stomach gastric acid, reducing damage and relieving pain.

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Similar questions

Q. Carbon dioxide reacts with calcium hydroxide to form calcium carbonate and water.

C a (O H)_{2} + C O_{2} \to C a C O_{3} + H_{2} O

This reaction is known as ______.

Identify the odd one out and justify.

(a) Chloride, nitrate, hydride, ammonium

(b) Hydrogen chloride, sodium hydroxide, calcium oxide, ammonia

(d) Ammonium chloride, sodium chloride, potassium nitrate, sodium sulphate

(e) Sodium nitrate, sodium carbonate, sodium sulphate, sodium chloride

(f) Calcium oxide, magnesium oxide, zinc oxide, sodium oxide.

(g) Crystalline blue vitriol, crystalline common salt, crystalline ferrous sulphate, crystalline sodium carbonate.

(h) Sodium chloride, potassium hydroxide, acetic acid, sodium acetate.

Q. Why are cimetidine and ranitidine better antacids than sodium hydrogen carbonate or magnesium or aluminium hydroxide ?

Which of the following compounds are administered as antacids?
(a) Sodium carbonate
(b) Sodium hydrogencarbonate
(c) Aluminium carbonate
(d) Magnesium hydroxide

Q. Give equations for the following conversions:
(i) Sodium to sodium hydroxide using water.
(ii) Steam to hydrogen using burning magnesium.
(iii) Dilute sulphuric acid to hydrogen using zinc.
(iv) Mercuric oxide to mercury.
(v) Silver oxide to silver.
(vi) Copper hydroxide to copper oxide.
(vii) Calcium hydroxide to calcium oxide.
(viii) Lead carbonate to lead.
(ix) Potassium nitrate to oxygen.
(x) Copper nitrate to nitrogen dioxide.
(xi) Mercuric nitrate to mercury.
(xii) Silver nitrate to silver.

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