Why are cimetidine and ranitidine better antacids than sodium hydrogencarbonate or magnesium or aluminium hydroxide ?

Assertion : Metal hydroxides are better antacids than hydrogencarbonates . Reason : Being insoluble metal hydroxides do not increase the pH above neutrality .

"Tenis are coated with a thin layer of aluminium hydroxide." Why?

Give reasons for the following : (i) Use of aspartame as an artificial sweetener is limited to cold foods. (ii) Metal hydroxides are better alternatives than sodiumk hydrogen carbonate for treatment of acidity. (iii) Aspirin is used in prevention of heart attacks.

Between sodiumhydrogencarbonate and magnesium hydroxide which is a better antacid and why ?

State your observation : When sodium hydroxide is added to magnesium nitrate solution

Aluminium is extracted from bauxite by the electrolysis of aluminium oxide dissolved in cryolite. Now answer the following question: When bauxite is treated with sodium hydroxide solution, what happens to the aluminium oxide and iron (III) oxide?

Why activated charcoal is a better adsorbent than ordinary charcoal ?

Write a balanced chemical equation Action of sodium hydroxide solution on aluminium.

Write a balanced chemical equation Action of sodium hydroxide solution on aluminium

Give reason why : Is sodium more reactive than aluminium ?