ABenzaldehyde
BPotassium Cyanide
CConc. Acids
DO-Toluidine
Answer:
C. Conc. Acids
Read Explanation:
Understanding Corrosive Substances
Definition: A corrosive substance is a chemical that causes visible destruction or irreversible alterations in living tissue by chemical action at the site of contact.
Mechanism: These chemicals typically cause chemical burns, which are different from thermal burns. They work by damaging the proteins and fats within the skin and other tissues.
GHS Classification: Under the Globally Harmonized System of Classification and Labelling of Chemicals (GHS), corrosives are substances that cause severe skin burns and eye damage (Category 1).
Common Examples of Corrosive Chemicals
Acids: Strong acids are potent corrosive agents. Examples include Sulfuric acid (H₂SO₄), Hydrochloric acid (HCl), and Nitric acid (HNO₃). Sulfuric acid is widely used in car batteries and industrial manufacturing.
Bases (Alkalis): Strong bases are often more dangerous than acids because they cause 'liquefaction necrosis,' which allows the chemical to penetrate deeper into tissues. Common examples include Sodium hydroxide (NaOH), also known as caustic soda or lye, and Potassium hydroxide (KOH).
Others: Certain halogens like Chlorine and Bromine, as well as oxidizing agents like Hydrogen peroxide (in high concentrations), are also classified as corrosive.