Which one among the following causes stomach pain in human body?

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Base

Acid

Salt

Bacterium

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This question was previously asked in

UPSC CAPF – 2012

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The correct answer is B) Acid.

The human stomach contains hydrochloric acid, which is essential for digestion. However, an excess production of stomach acid (hyperacidity) can lead to irritation of the stomach lining or esophagus, causing symptoms like heartburn, acid reflux, and stomach pain.

While bacteria like Helicobacter pylori can cause stomach ulcers and gastritis leading to pain, among the direct chemical options provided, acid (specifically, excessive stomach acid) is a common and direct cause of stomach pain symptoms like burning and aching. Bases and salts are not typically the primary direct causes of stomach pain in this context, although some substances containing them might cause irritation.

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