Correct Answer: Muriatic Acid
Subject: chemistry
Explanation: • <b>Key Fact</b> Muriatic acid is a historic and industrial common name for Hydrochloric Acid (HCl). • <b>Supporting Detail</b> It is widely used for metal cleaning, pickling steel before galvanization, and cleaning brickwork. • <b>Related Concept</b> Oil of Vitriol is Sulphuric Acid (H₂SO₄). • <b>Why wrong options are wrong</b> Aqua Fortis is Nitric Acid (HNO₃); Caustic soda is Sodium Hydroxide (NaOH). • <b>Exam Trick</b> Muriatic = Marine/Salt related (HCl comes from NaCl). • <b>Additional Info</b> HCl is also a major component of gastric juice aiding digestion.
Loading Gyaanify...