JEE Main levelSingle correct optionDifficulty 2 of 3el156
Assertion (A): Aluminium hydroxide or magnesium hydroxide is preferred to sodium hydrogencarbonate for long-term use as an antacid. Reason (R): Excess hydrogencarbonate makes the stomach alkaline and can trigger the production of even more acid.
ABoth A and R are true and R is the correct explanation of A
BBoth A and R are true but R is not the correct explanation of A
CA is true but R is false
DA is false but R is true
Answer: A
Metal hydroxides are insoluble and do not make the stomach too alkaline, while excess hydrogencarbonate does and may cause more acid secretion. A and R are true and R explains A.