JEE Advanced levelSingle correct optionDifficulty 3 of 3el094
Assertion: Taking a very large excess of sodium hydrogencarbonate for acidity is unwise.
Reason: Sodium hydrogencarbonate is a strong base like sodium hydroxide and raises the pH of the stomach above 13.
ABoth Assertion and Reason are true and the Reason is the correct explanation of the Assertion
BBoth Assertion and Reason are true but the Reason is not the correct explanation of the Assertion
CAssertion is true but Reason is false
DAssertion is false but Reason is true
Answer: C
The Assertion is true because the excess makes the stomach alkaline and can cause more acid to be released. The Reason is false, since NaHCO3 is only weakly basic (a salt of a weak acid) and does not give a pH near 13.