Home › CBSE Class 10 › Chemistry › Acids, Bases and Salts › pH of the stomach (gastric juice) is approximate…
pH of the stomach (gastric juice) is approximately:
A1 - 2 (very acidic)
B4 - 5 (mildly acidic)
C7 (neutral)
D9 - 10 (basic)
Answer & Solution
Correct answer: A. 1 - 2 (very acidic)
1. Gastric juice contains hydrochloric acid → pH ≈ 1.5-2.
2. Strong acidity helps DIGESTION of food and kills swallowed bacteria.
3. Antacids (Mg(OH)₂ or NaHCO₃) neutralise excess acid in acidity / heartburn.
_Source: NCERT Class 10 Science Ch 2 §2.3 pH and Body Functions_
Related questions
Tooth enamel is made of:An acid that is also a strong dehydrating agent and is used in car batteries is:Plaster of Paris (POP) has the formula:The salt formed from NaOH + HCl is:When a carbonate reacts with an acid, the gas evolved is:When an acid reacts with a metal, the gas usually evolved is:Washing soda is sodium carbonate decahydrate, formula:Baking soda (sodium hydrogen carbonate) has the formula: