Which of the following is an example of Class 8 corrosive substances?

• A. Acids such as sulfuric acid and hydrochloric acid
• B. Gases under pressure
• C. Flammable liquids
• D. Radioactive materials

Answer: (A)

Class 8 corrosive substances are those that cause severe damage to living tissue and to metals on contact. Acids like sulfuric acid and hydrochloric acid fit this category because they rapidly attack and break down materials they touch, producing chemical burns and corroding metals. That strong corrosive action is the defining feature of this class. Gases under pressure belong to a different hazard category, where the concern is the physical danger from a gas being released under high pressure rather than chemical corrosion. Flammable liquids are classified as Class 3 due to their fire risk, not because of corrosive effect. Radioactive materials are Class 7 and involve radiation hazards. So acids such as sulfuric and hydrochloric acid exemplify Class 8 corrosives.